What Is a Mother to Do
by Hipparchus
Copyright© 2026 by Hipparchus
It was a Thursday, and Jennifer Thomson was finishing breakfast when her sixteen-year-old daughter, Beth entered the kitchen.
“Well, up early! What are you going to do on your first day out of school?”
“Dunno. Just hang out at the pool maybe.”
“Any sign of Alex?”
“Nah, still sleeping, I think.”
“Well, I’m off to work. Don’t get a burn.” Jennifer said on standing and giving her daughter a kiss on the head.
Beth watched her mother leave, then took a breath. She suspected it was going to be a boring summer. Her boyfriend, Dan, just graduated high school and was going to spend the summer traveling before starting college. He was the first boyfriend she really explored sex with, and did they explore! Her mother was quite aware Beth was boy-crazy and decided to put her on the Pill that year, and Beth took full advantage of it.
“Mom leave?” she heard over her shoulder.
Alex was standing there still rubbing the sleep from his eyes. He was fifteen but only sixteen months her junior, yet she still thought of him as her baby brother.
“Wow! Finally free for the summer with nothing to do.” he grinned while scrounging up breakfast.
“Thought you had to mow the lawn.”
“Eventually. What are you going to do?”
“Hang out at the pool.”
“Can I join you?”
“Not my pool.” Beth laughed.
One of Alex’s guilty pleasures was to watch his pretty sister in her bikini. She was certainly an eyeful with a fine figure and a noticeable cleavage for her age, capped by her strawberry-blonde hair and cute face.
As Alex was finishing his breakfast, Beth reappeared in the kitchen in her bikini, a towel draped over her shoulder, before heading out the back door to the patio. And she was quite aware her brother was getting an eyeful. As she settled into a lounge chair, thoughts that had been building over the spring were coming back. She knew by the way Alex watched her, that his hormones were raging. But her own feelings were turning to the forbidden side as she watched him becoming a man, and her lack of sex wasn’t helping.
As these thoughts occupied her mind, Alex came out in his swimming trunks. It was her turn to watch as she realized her brother was pretty sexy for a fifteen-year-old.
As Beth put on some sunscreen, she decided to tease him.
“Hey! Mind putting some on my back?”
Alex paused a moment before smiling at the opportunity, and he took the lotion from her as she rolled over.
“Here, this will make it easier.” she said, reaching around to untie her top.
Alex looked wide-eyed at her bare back along with her tight butt as he sat beside her. After pouring some lotion on his hands, he rubbed it on her back, enjoying the chance to touch her.
“Mmm ... That feels good. Do my legs too.” Beth purred.
Alex spent more time than needed on her back, and Beth knew it, before moving on to her legs. She decided to test him and spread her legs, seeing if he would do her inner thighs. He lavished more attention on her legs, and as he did her thighs, he was rewarded by her hums of approval.
“Mmm ... That was nice. Thank you.”
Alex was feeling a bit bothered by getting his hands on his sexy sister and decided to cool off in the pool. He dove in and started doing some leisurely laps when Beth tied up her bikini before turning to watch him. He was pretty hot despite being her brother, and her forbidden thoughts were getting the better of her. ‘Why can’t brother and sister make out?’ she asked herself.
It was turning into a hot day, which gave her an excuse to join him in the pool. Alex stopped swimming when he saw her descend the pool steps into the cool water.
“Mmm ... Nice.” she murmured as she closed her eyes and floated in the water, fully aware her brother was watching.
She was feeling confident by this time that, given a chance, Alex would jump at the chance to fuck her. The only question was how to start. She decided to probe his love life.
“So, what happened to that girlfriend of yours?”
“Oh, Ellie? We kinda broke up.”
“Why did you break up?”
“I don’t know. It was her idea.”
Beth decided to press home, “How far did you get with her?”
“Beth!”
“We never had secrets. Come on. I’ll tell you about my love life.”
“Well...” Alex started reluctantly. “We only got to kissing. She didn’t want to go any further. Probably why we broke up. She got mad if I tried to touch her tits.”
“Silly girl!” Beth laughed.
Standing neck deep in water, Beth decided to up the ante and took off her bikini top, tossing it on the pool ledge while Alex stared in disbelief.
“I don’t know what the big deal is. I know you’ve seen me naked before. Anyway, I promised to tell you about my love life. A secret first. Bet you didn’t know Mom put me on the Pill last fall.”
Alex simply stared at her, waiting for more.
“Remember Jake? His parents always got home late. That’s where I was after school. The two of us fucked almost every day. God, I miss that. He’s gone for the summer, you know.”
She had moved closer to him, her nipples just poking out of the water, with Alex unable to take his eyes off them. Beth steeled herself and made her move.
“Admit it, you’re attracted to me. And I’ll confess, you’ve become quite a looker yourself!”
She moved even closer, their faces just inches apart, where they simply looked at each other. She could see he wanted it, and her own heart was racing. She realized that she had to make the first move and brought her lips to his. It was a tentative kiss, with Alex not knowing how to respond. But as their lips parted, both could read the desires of the other.
Beth put her arms around his neck as they kissed again, more confidently this time. And Alex took his sister in his arms, pulling her close and feeling her stiff nipples pressing against him. Their kissing grew more passionate until Beth broke it off.
“You’re a pretty good kisser!” she teased before locking her lips on his again.
This time, she gave him some tongue, to which he eagerly reciprocated.
The two became lost to time as they drifted about the pool, wrapped in each other’s arms, kissing passionately as they explored this first blush of sibling intimacy.
Eventually, Beth swam away and turned to him.
“Dare you to take your swimsuit off!”
“Gonna take yours off if I do?” he grinned before hoisting his trunks out of the water for her to see.
He tossed them out of the pool, then turned to Beth who pulled off her bikini bottoms and held them up for him to see. Tossing them aside, she wrapped her arms around him again, this time feeling his erection pressing against her. They kissed hungrily as Alex took the opportunity to cup a pert breast.
“Like that? Ellie didn’t let you play with her tits?”
“Nah, we just kissed. I think she was kinda up tight.”
“She never even jerked you off?” Beth asked incredulously.
“Nah, never got that far.”
Beth reached under the water, and finding a rather handsome erection, started stroking it to Alex’s surprise.
She kissed him again as she fondled his cock, working up her courage to ask what he wanted.
“Never had a blowjob then. Will you let me give you one? I like the idea of giving you your first.”
Before he could reply, Beth started pushing him to the pool steps, and with such a prospect he was not going to protest. She had him sit on the steps where, for the first time, she got a look at his package, pleased to find it bigger than she expected.
“My little brother is pretty sexy.” she exclaimed as she knelt before him and took hold of his cock, enjoying the feeling of it in her hands.
“Just enjoy.” she purred as she brought her lips to it, planting a few kisses down its length as Alex sighed with anticipation.
She ran her tongue up and down it a few times before letting it slip past her soft lips, causing her brother to gasp. She loved having a cock in her mouth again, as well as the reaction she was getting from him, particularly enjoying pleasing her brother like this.
She bobbed happily on his cock, while Alex mumbled her name between gasps. As she expected, he couldn’t last long, and he called her name in warning. But Beth just hummed her approval as she started sucking on him faster.
“Fuck...!” he groaned as his cock exploded in her mouth, with Beth doing her best to swallow it all.
She was quite surprised by his load and the length of his climax. For Alex, it was the most intense orgasm he ever experienced.
When it finally ended, Beth released his cock with a slurp, then noticing the cum that escaped, running down his shaft, licked it up for good measure while Alex, catching his breath, leaned back to recover.
“That was fun. Like that?” Beth teased with mock innocence.
“Fuck ... Beth!” was all he could say.
She gave him a minute to recover while giving his cock a few more kisses. But she expected her turn.
“Never went down on a girl either, I expect. Well, it’s your turn.”
Beth sat on the steps and spread her legs, giving her brother a good look at her nude body as well as her enticing pussy. His eyes drank her in a moment before his sister reminded him of his duties. He knelt before her in the water, his hands freely able to explore her body. But her awaiting womanhood was before him, and he leaned down, kissing her stomach first, as he prepared to taste a woman for the first time.
Alex heard a reassuring sigh from his sister as his tongue slipped into her sheath.
“There ... No ... Yes ... That! Fuck...!” Beth said, directing him, until his tongue was pleasuring her to the max.
It wasn’t long before she took hold of his head and pressed her pussy into his face while he did his best to pleasure her. A little while later, her body tensed and she cried out as an orgasm washed over her, encouraging her brother to continue pleasuring her.
“Mmm ... That was good.” she sighed, pushing his head away.
Beth pulled his face to hers for a sloppy kiss, tasting herself on it.
“These steps aren’t the most comfortable place to make love.” Beth said.
She looked him in the eyes, and after a moment, her mind was made up.
“Can I be your first?” she asked sincerely.
It was just what he was hoping for, and he pulled her to him for a long, deep kiss before dragging her back into the water, where they kissed some more.
“But let’s go to my room.” she purred, arms around his neck.
They hauled themselves out of the pool and dried off before gathering up their bathing suits and running back into the house, with Beth unable to miss his reviving manhood.
In her room, Beth threw herself on the bed and invited her brother to join him with open arms. He pulled up beside Beth and started kissing her, a little more tenderly, trying to do his best to please her. He moved on to licking his sister’s neck and ear before pausing to admire her well-developed breasts.
“Ellie never gave me a chance to suck on her breasts.” he lamented.
“Well, my tits are all yours!”
Without hesitation, Alex kissed a nipple then ran his tongue around it before sampling the other. Soon, he was consumed with making love to them, licking and sucking on both hungrily, with Beth more than happy to let him go at it. She liked having her tits made love to, and his clear joy only added to the pleasure.
Eventually, he returned his attention to her lips, while his hand slipped between her thighs, finding her quite wet. She expected he was ready for the next step. But she was going to take charge; after all, she was the experienced one.
She pushed her brother to lie on his back, then leaned up next to him. It was her first good chance to admire his body, and she let her fingers glide down it from his chest to his torso to a thigh, avoiding his already hard cock. Her boyfriend turned eighteen while they were lovers. Yet despite being three years younger, she found her brother to be just as desirable, even more so.
She took his erection in hand, enjoying the feeling of how hard he was, and started stroking it before sliding down next to it. His cock was ready, but she wanted to enjoy having him in her mouth again before giving him his ultimate experience.
After sucking on his cock sensually a minute or two and enjoying his gentle sighs, Beth straddled her brother’s hips and looked him in the eyes, wanting to watch his expression at this special moment. Both gasped as she lowered herself on his eager cock until it was buried to the hilt.
“Don’t move! Let me just feel you inside me a moment! Oh Alex! You’re inside me! Feels so good...” she exclaimed, looking adoringly at her brother.
Alex was overcome with emotions himself, realizing his sister was truly fucking him as Beth started rocking on his manhood. She grabbed his hands and placed them on her tits, which he proceeded to knead. He could see that she was enjoying it as much as he was, riding him, eyes closed, a smile of bliss on her face.
His hands started exploring her body, wanting to feel every inch of her smooth skin, while doing his best not to cum too soon. Beth leaned down and kissed him sloppily, her breathlessness telling of her feeling as hot as he did, and he murmured her name as he wrapped his arms around her.
“Yes! Give me your cum!” she begged.
That was too much for him, and with a thrust of his hips, his cock started flooding his sister’s womb with his sperm, with Beth kissing him hard as she spasmed to her own orgasm. It was an incredible moment for both as siblings bonded in the most intimate way possible.
“Mmm ... Little brother!” she purred, resting her head on his chest as he caressed her lovingly.
After languishing in bliss for a while, Beth sat up and looked down at her brother with a mischievous smile.
“Fuck! I have your cum in me! Mmm ... And you’re not a virgin anymore. Oh, Alex! I love being your first!”
She leaned down again and planted a languishing kiss on his lips.
“I guess I’m supposed to feel guilty about fucking my own brother.” she grinned.
“I don’t! Fuck, Beth! I love you!” he declared.
“Like a brother or a lover?” she teased.
“Both!” he retorted before pulling her lips to his.
Beth rolled off her brother, releasing his retreating erection from the embrace of her sheath, feeling his cum dripping from her slit. Beth dipped her fingers into it, then brought them to her lips and licked them clean while looking at her brother.
“I like cum, and I especially like yours.” Beth said, eyeing her brother sultrily, knowing just what effect that had on him.
She settled into his embrace, resting her head on his shoulder as the two basked in the joy of their first post-coital moment. And while he caressed her lovingly, Beth’s fingers idly traced her brother’s body.
“I like lying here with you.” she purred, snuggling closer to him.
Alex placed a finger under his sister’s chin and, pulling her lips to his, kissed her tenderly. With time, their kisses grew more passionate, and Beth wondered if her brother’s cock wasn’t done. Reaching down, she found his manhood already stirring.
“Looks like you need more attention!” Beth laughed before sliding down to beside his cock.
Watching his reaction, she started licking his cock, and as it swelled to her attentions, she slipped it into her mouth and started bobbing on it, rewarded by his gasp of delight. She suspected his teenage libido would need little coaching and was soon rewarded by his erection ready for action.
Beth got on all fours and glanced at him, expecting him to know what to do. Without hesitation, Alex knelt behind her and slipped his shaft into her awaiting slit, with both sighing to the pleasure of being joined again. He grabbed her hip and started pounding away while Beth buried her face in the pillow, enjoying the feeling of being fucked hard by her brother.
After a while, they changed positions, with Alex scissoring his sister. Here, they could kiss while he slid his cock in and out of her dripping sheath, his hands exploring her enticing body before settling on her clit. He carefully massaged it, enjoying Beth’s reaction, and with time, her body grew restless with passion. Finally, she arched her back, gasping as an orgasm washed over her while her brother continued fucking her slowly.
Giggling after that climax, Beth rolled onto her back and spread her legs, encouraging Alex to mount her. His cock soon found its home again, and driving it deep, started fucking his sister as the two shared intense kisses. Alex was in heaven as Beth’s hands glided over his back, his manhood sliding in and out slowly.
They made love in this position a while until Alex’s thrusts grew relentless. With Beth grabbing his ass in encouragement, Alex took one more thrust and held it, grunting as his cock started pumping his seed into his sister. All this fucking had Beth on edge, and when she felt her brother cumming inside her, it tipped her over the edge to another orgasm. Gasping, Beth held onto her brother, overcome as a shared ecstasy washed over both of them, knowing he was planting his seed inside her again.
Finally spent, Alex buried his face in his sister’s neck while she caressed him in the afterglow of a passionate union.
“Nothing is going to be the same.” Beth whispered, running her fingers through his hair.
“I don’t want to go back.” Alex smiled before giving her a kiss.
They lay together a while, basking in the wonder of their newfound love until Beth suggested it was time.
“We never had lunch! Besides, I don’t think we would want Mom to find us this way.”
“She won’t be home for a few more hours.” Alex reminded her.
“Still, we should get up.”
After getting out of bed, the two shared a soapy shower, along with more kisses before getting dressed.
Later, in the kitchen, Beth took her turn cooking dinner with Alex helping; all the while, the two shared knowing smirks, with Alex occasionally grabbing her and stealing more kisses, knowing the newfound liberties he had.
When they heard their mother’s car pull into the garage, the siblings took one more knowing look at each other, then did their best to appear as if this was like any other day.
“I have a dinner date tomorrow. So, the two of you are on your own.” Jennifer said as they sat down to dinner, with her children looking at each other knowingly.
The rest of the evening appeared like any other evening in the Thomson household, except for the secret knowledge between Beth and Alex and their anticipation for the next day.
The next morning, Beth arrived in the kitchen as her mother was preparing to leave for work.
“I’ll be back to change for dinner. See you then.” Jennifer said on heading out.
Beth was glad to have the reminder, realizing that any shenanigans she and Alex got into would have to be informed by their mother’s comings and goings. And after she heard Jennifer drive off, Beth headed to her brother’s room.
“Hey sleepy head!” Beth teased before stripping off her T-shirt and shorts.
She pulled back the covers to find Alex in boxer shorts, which she quickly got rid of before straddling his torso.
“Yesterday was fun!” she grinned before leaning down and kissing her brother wildly.
Beth was rewarded by his arms enveloping her while the two shared a long kissing session. But she was eager for sex, and she wanted to test her brother. Before he knew it, Beth straddled his face, her enticing pussy inches from his lips, and without hesitation his tongue slipped into her entrance.
“Fuck, yeah...” she moaned, as she pleasured herself on her brother’s face.
The previous day had only whetted her appetite for sex, and an orgasm soon welled up, with Beth grinding her pussy on Alex’s busy tongue. Still, she wasn’t satisfied and continued letting him eat her out until another climax hit, with Beth’s body convulsing with ecstasy.
“Mmm ... That was great!” she exclaimed, climbing off his soaking face and kissing him sloppily.
Such an effort deserved a reward, and Beth slithered between his legs, taking hold of his erection, already eager for attention. Giving him a sexy look, Beth licked his shaft a few times before going down on him and sucking on his cock hungrily, causing Alex to gasp.
Again, Beth took pleasure at having his cock in her mouth as well as the power she felt over him by sucking on his manhood, and it wasn’t long before he warned her.
Beth purred as she swallowed the first spurts of his cum, finishing off his load while her hand stroked his abdomen.
“Fuck! Sis! What a way to start the day!” Alex laughed.
Beth moved beside him and, after a passionate kiss, started.
“I gather you liked that.”
His response was another passionate kiss.
After getting out of bed, they realized clothes seemed superfluous and went to the kitchen naked to scrounge up breakfast, with both of them unable to keep their hands off each other. And after breakfast they headed to the pool.
“Bring your swimsuit.” Beth warned.
“Why?”
In case someone comes, like Mom. Do you want us to get caught naked together?”
With suits placed by the edge of the pool for quick access, they jumped in together where, with hormones raging, neither were able to keep their hands off each other, hugging as lips locked on each other. Beth could feel his erection rubbing against her and reached down for it while Alex nibbled on her neck.
“You are insatiable!” Beth teased before wrapping her legs around his hips and kissing him wildly.
Her eager pussy was inches from his hard cock, and Alex pressed it to her entrance, with his sister completing the task by lowering herself onto it.
“Oh, fuck! You feel great!” Alex sighed on feeling himself inside his sister again.
Beth bounced on her brother’s shaft while they kissed with abandon. They lost track of everything as they fucked and kissed in the cool water. After a while, Beth could feel he was close and begged him for his seed, and a moment later, with a groan, Alex started thrusting his cock into his sister’s sheath as it unleashed his sperm inside her. And there was something about her brother cumming inside her that set off Beth, with her own orgasm soon following.
With their mutual climax over, Alex simply held his sister tight, his cock still buried in her womanhood.
“I love you, Sis.” he whispered, looking into her eyes.
Beth, in turn, kissed her brother lovingly, also feeling the same.
Sated for the time being, they played in the water, taking every opportunity to hug and kiss, until they got out and settled into lounge chairs.
“This is going to be a great summer! You’re a much better fuck than Dan!” Beth giggled.
The rest of the day was spent in indolence, until Beth suggested they head to her room.
“We’re not going to get a chance to be alone the whole weekend with Mom here.” she reminded her brother.
Alex followed her, and inside her room, they made love, with Alex eating out his sister to a few more orgasms, followed by her riding his cock until he came inside his sister again.
And after some post-coital kisses, they collected themselves and settled in the living room as if it was just like any other day.
When Jennifer came home, she headed to her room to change for her date, with Beth tagging along to watch. She always admired her mother and liked to take these opportunities to see her in various states of undress.
“Wow, Mom!” Beth said approvingly at an outfit that complimented her figure as well as her long legs.
When Jennifer returned to the living room, her son just stared.
“Like it?” his mother asked.
“Uh, yeah! You look great, Mom.”
Beth could see the look on Alex’s face.
“Hey! Did you forget about the lawn, young man?” Jennifer reminded him.
“Oh yeah. Tomorrow.” Alex promised.
“Well, don’t know when I’ll be home. Meeting him at the restaurant. Bye.”
“There’s frozen pizza?” Beth suggested to her brother after Jennifer left.
That was okay with him, and while they were eating, Beth grinned at him.
“I saw the way you looked at Mom. Wasn’t the first time either.” Beth smirked.
“So? Mom is very pretty.”
“Do you have thoughts about her?”
Alex paused. It was as if his sister had opened a secret corner of his mind.
“Come on, it’s not like we have secrets now. Would you bang Mom if you could?”
“Beth! I mean ... Well, she is pretty hot.”
“Ha! I knew it.”
“Not going to happen anyway.” he reminded her. “And you? Would you bed Mom?”
Alex thought he’d get a protest from Beth. Instead, he got a surprise.
“Maybe. Didn’t expect that, did you? As we’re telling secrets ... Remember my friend Tracy? We started playing around, kissing and feeling each other up. Made each other cum a couple times. But then we both got boyfriends.”
Beth sat in her brother’s lap, her arms around his neck.
“Turns you on, doesn’t it? Bet you’d love a threesome.” she teased before planting her lips on his.
After cleaning up, they settled in front of the TV and found a movie to watch. But the real interest was each other, with hugs and kisses and generally exploring each other with their hands. After an hour or so of this, things escalated to Beth unzipping her brother’s shorts and pulling out his growing erection. She stroked it a bit as she admired his manhood until leaning down and slipping his cock into her mouth.
Alex closed his eyes and mumbled her name as his sister started bobbing on his shaft. Beth was feeling sexy and wanted to please him. She took her time, enjoying the feeling of his cock in her mouth, slowly building up his ardor. Finally, he couldn’t hold back and came in his sister’s mouth, while she hummed her approval.
“Like that?” Beth teased when she swallowed the last of his load.
“Fuck! Beth!” he sighed before pulling his sister up.
He kissed her lustily while his hand slipped into her shorts, where he found her dripping pussy eager for attention. He licked her neck while his fingers went to work on her needy slit, and he was getting her into quite a lather when they heard the garage door open.
“Fuck! Mom’s home!” Beth exclaimed.
Alex stuffed his cock back into his shorts and zipped it up while Beth rearranged herself. By the time their mother entered the living room, the two appeared to be casually watching a movie.
“Home so soon?” Beth asked.
“Yes.” she replied tersely.
“What happened?” her daughter asked.
“The asshole was married! I’m going to bed.”
The kids were a bit shocked, having rarely heard such language from her. They looked at each other a moment, then Beth stood and headed to her mother’s room.
“Mom? Are you okay?” Beth asked softly, knocking on her door.
After a minute Jennifer asked her to come in.
“Are you okay?” she repeated.
“Yeah, it’s just ... Damn! He was just looking for a fling on the side. He had me wondering when he wanted to go to a hotel room! Asshole!”
“You’ll find someone, Mom.” Beth reassured her.
“Beth, I just turned forty. It only gets harder. Feels like the good ones are already taken. But don’t you worry about me. I’m looking forward to relaxing by the pool tomorrow.”
She bid her daughter good-night, and after she closed the bedroom door, Jennifer stripped and lay out on her bed before pulling her vibrator out from her nightstand.
Beth plopped next to her brother on the sofa and rested her head on his shoulder.
“She okay?” Alex asked.
“Pretty bummed out at the moment. We need to be nice to her tomorrow.” Beth suggested.
“Where were we?” he grinned, putting his hand around his sister’s waist.
“Not with Mom here.” she whispered.
So, they finished watching a movie before turning in, but not before Alex gave his sister a lingering kiss.
The next morning, after breakfast, Jennifer donned her bikini and headed out to the pool, taking a lounge chair and settling in to catch some late-morning rays. Alex had already started mowing the lawn but paused a moment to watch his mother. As sexy as he found his sister, his mom was more so. She was tall and neither too thin nor too curvy in his eyes. But it was her bust that always caught his attention. Her breasts were not large but shapely enough to give her an eye-catching cleavage, and it was that cleavage that Alex had a hard time avoiding looking at.
Alex caught himself and returned to chores. Half an hour later, Jennifer decided to do some laps and dived into the pool. By this time, Alex had moved on to the front lawn, and with the last of it done, he was ready for a break and headed around back, where he found his mother climbing out of the pool, her body dripping wet. Again, Alex caught himself, then approached Jennifer as she dried off.
“Want something, Mom? Iced tea, perhaps?”
“Oh, that would be wonderful, Love.”
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