"Oh, yes," Mike groaned.

"Shhh!" Mandy said for what felt like the millionth time. They didn't want someone to hear. Why couldn't he be quiet?

Mike partially sat up in the corner of the wall where it met the head of Mandy's bed. He had two bed pillows stuffed behind his back for support. He was in a comfortable position to watch.

"That's so good, Mandy," he complimented as she licked up his hard shaft.

She was glad her boyfriend liked it but she couldn't understand why he couldn't be quiet about it. She wondered if she should let him eat her pussy just to show him how quiet one could be.

"Stop pushing," she said quietly. She hated when he tried to push her head further down his dick.

"Ohh, Mandy," he encouraged. He let his hands rest on her head as she bobbed. She was the first girl to ever do this to him. He loved it!

They were both high school freshmen. Michael asked her out only a week into the school year. It was now a month since their first date and Mandy was doing what she had been doing for the last week. She was sucking her boyfriend's dick. It wasn't a perfect situation however.

"It's starting to get too gooey," she said.

"No, it's not."

"You're not the one down here sucking on it."

"Just a little more," he begged.

It was the same conversation they had for the last several days.

"It's just too yucky now," she said.

"Wipe it off," he pleaded.

"Look at your dick. It's drooling like a leaky faucet."

"Please, Amanda, please." He hoped using her full name would work to convince her to continue even though it hadn't worked the other times.

"I can't," she said.

Mike couldn't believe it. She was going to bring him this close to cumming, yet she wasn't going to finish him off. Again! AGAIN!

"My balls ache so bad, Mandy. You have to continue."

"So maybe I shouldn't suck your dick at all?"

"No, it's just..."

"Hey, Mandy," said another girl's voice. "Oh my god!"

Mike and Mandy both jumped startled by her big sister's voice. Ashley, a high school senior, stood stupefied at the sight of her little sister kneeling between the legs of a boy with his exposed hard, wet cock sticking straight up.

"Why don't you knock?" Mandy angrily said, immediately getting defensive.

"I didn't expect you to have a boy in here!" Ashley retorted. It had always been an open door policy between Mandy and her.

"What are you doing home?"

"Sam has to go somewhere with his parents today," Ashley said annoyed. She always went over to her boyfriend's house because his parents weren't home. It didn't mean she had to explain why she was home to her sister though. It was her house too!

"Don't you have homework to do?" Mandy asked, knowing full well that Ashley didn't touch her homework until after dinner just like she did.

"Don't you? Is this what Mr. Jones is teaching in biology this year?"

"We're taking physics."

"Who cares?"

"You're not going to tell Dad and Mom are you?"

"No. I'm glad I know about this. Now Sam can come over here and I don't have to worry about you telling Dad and Mom. We can put a sign on our doors to let each other know when we have a boy over and to leave us alone. I'll let you finish your boyfriend."

"I'm done," Mandy said.

"He's still hard," said Ashley.

"It gets too gooey. I have to stop."

"You can't leave him like that! You have to finish him off! It's unfair to him!" She sounded urgent.

Mike liked the sound of this conversation. He liked it a lot!

"I can't. It's too gross."

"No, it's not. I'll do it then. Get out of the way."

Mike was stunned when Ashley pushed Mandy aside, but he was positively thrilled when big sister took his dick into her mouth.

"You were pretty close to blowing, weren't you?" commented Ashley. She knew her cocks because she'd sucked off her five previous boyfriends. Before that she only gave handjobs. Sam, her current boyfriend, was the first one she had ever fucked.

"Yeah," he gasped.

Ashley diligently bobbed on her sister's boyfriend's cock. She couldn't believe that Mandy was going to leave him all pent up like that. She once had to leave her former boyfriend, Tommy, with a severe case of blue balls when his mother accidentally walked in and they were barely able to hide what they were doing. She didn't have the opportunity to finish him off later and he walked around painfully afterward. She hated to see Tommy like that. Right then she knew it was always wrong to not complete an action if you got a guy really excited.

Mike cried out. He thrust his hips up and strained.

Ashley patiently continued. She knew he would shoot any moment.

He shouted and began to cum.

Ashley dutifully stayed motionless as he shot his jizz into her mouth. It got weird. He kept cumming and cumming. She swallowed but there was too much. Jizz slipped out and onto his cock. Finally he subsided. She was surprised how many swallows she had to do to get it down.

Mike went home. Mandy sat in her room for a while and eventually decided she should seek out her sister. She was still uneasy that Ashley found out about her and Mike. In the back of her mind, Mandy felt her sister might try to hold the knowledge of today's events over her head in some way even though Ashley had sucked Mike off to completion.

"Ashley?" Mandy softly said while knocking on the open bedroom door.

"What?" said Ashley without looking up from the paper she was writing on.

"What are you doing?" said Mandy incredulously.

Ashley had a school book open and a stack of papers next to where she sat on her bed. Big sister hated school as much as Mandy did and probably even worse. Ashley was barely scraping by in her classes. She never cracked open her book until after dinner and stopped as soon as her favorite TV shows came on regardless of whether she was finished or not. On weekends Ashley was always out with friends or out with Sam. This was completely weird.

"Just finishing up my math," said Ashley. She finished writing, put the paper in the stack, and closed the textbook. "There!" she said triumphantly. With a happy smile, she finally looked up at her sister.

Math? This was getting even weirder to Mandy. Math was the worst!

"So you have something due tomorrow?" questioned a confused Mandy.

"This one I think." Ashley pulled out the paper on the bottom of the stack.

"What's all that?" Mandy asked, pointing at the stack.

"Math."

"Math? All of it?"

"There's no more," Ashley said, shrugging. "There's only the one book."

"You finished all the math problems in the book?" said Mandy, nearly shouting. This was too unbelievable.

"Sure."

Something was definitely wrong. Mandy knew Ashley could only correctly add two plus three half the time. How could she finish her whole math book in an hour?

"Can I see?" Mandy said.

"Sure. Do you need help with your math?"

"No thanks."

The math was too advanced for Mandy but as far as she could tell it looked right. Ashley had even given a few proofs to show how she derived some answers.

"Wow!" said Mandy, putting the stack down.

Ashley shrugged.

"About me and Mike..." Mandy began.

"Don't worry about it. I won't say a thing," Ashley interjected. "Your boyfriend sure cums a lot."

"Does he?" Mandy said timidly. She didn't like the idea of that much goo. She could barely handle what she was doing now. It was just too messy.

"I've never known a guy to cum so much. How long have you had him pent up?"

Ashley slammed her book bag onto her bed. What a completely shitty day! She did better on the quiz than she usually did, but she still didn't do that great. It was strange but she couldn't seem to think clearly about the math problems. Everything was so clear the day before. She tried to turn in all the homework she completed yesterday and Mr. Shell accused her of cheating. Cheating! She would never cheat to get a good grade. She'd rather fail than cheat.

Speaking of cheating, her stupid boyfriend, make that ex-boyfriend, wasn't with his parents after all. Sam went out with Lisa Lowenstein yesterday. Lisa was all over him during lunch. When Ashley asked him about it, Sam said he didn't love her anymore. Just like that, they were done. The coward didn't even have the balls to tell her privately.

She swept her bag off her bed and collapsed face down. She sobbed into her pillow. She didn't know how long it was before there was a knock on her door.

"Sorry to bother you," a guy said.

She turned her head. It was her sister's boyfriend. He was naked and had a hard-on.

"What?" she said.

"Are you okay?" Mike asked. He could tell that she had been crying.

"What do you want?" she said perturbed.

"Mandy won't ... um..." He was losing his nerve. She was obviously upset so it seemed wrong to impose. "Yesterday, you ... uh..."

"Mandy still won't finish you off?" Ashley said, figuring it out.

"No."

"And you were wondering if I'd do it again for you?"

"Yes."

"Come here," she said, rolling to her back. She might as well have a little fun today. It wasn't like she had a boyfriend. She might as well complete what her stupid sister was too squeamish to do.

Ashley directed Mike so that he was on top straddling her neck. She put pillows behind her head so she was propped up. She began to suck his cock.

"Are you going to cum as much as you did last time?" she teased.

"I don't know," he said. "Was it a lot?"

"A lot? It was a huge load."

"Really?" That made him feel good.

"It was enormous. I've never swallowed a bigger load."

That made him feel very good.

Conversation waned while she focused on sucking his cock.

Mike groaned shortly.

"You're so good," he said.

"Why don't you let me do the whole thing next time?" she abruptly said. The boy had a decent cock. It was smaller than most of her boyfriends but that made it easier to suck and in turn made it more enjoyable to suck. It wasn't always making her gag like what happened when she dated Dave. "There's no reason to have Mandy do it if she's not going to bring you off."

"Really? Okay!" Mike loved the idea.

Ashley wasn't going to go around admitting she was sucking off a freshman but until she had a new boyfriend he would keep her entertained. As long as he didn't think he was going to ever fuck her then everything would be okay.

"Oh, fuck, Ashley," he groaned. "You're amazing."

"Thanks," she said. She could do a few more things to his cock and he'd end up worshipping the ground she walked on. Hell, he'd probably lick the bottom of her shoes or lick her ass after she took a shit.

He cried out when she tried one of her maneuvers. "You're incredible! I love you!"

Ashley loved his reaction. It was what she wanted.

"Oh, fuuuuck!" he groaned. "I'm..."

Ashley clamped down tightly at the base of his shaft. He was very close but she was preventing it. Mike's breath was hard and would almost sound panicked in another situation. Ashley loosened her lips and rapidly bobbed.

"Yes!" he shouted seconds later.

The first spurt into Ashley's mouth was a deluge but surprisingly the second felt even bigger. His cock spasmed seemingly forever and each time it released a substantial amount of cum. Even his final spurts were as much as most boys' first spurts which were the biggest jizz loads. For a moment, Ashley felt like she was going to drown but she was able to do a couple of big swallows and some of the jizz naturally slid down her throat opening too. She gasped for breath afterward.

"Thanks, Ashley," Mike said, kissing her forehead. "You're fantastic. Can I come over tomorrow?"

"Sure," she gasped without thinking if she had anything planned.

Mike left.

Ashley sat up. It felt like she had a million thoughts in her head. She could visualize the math quiz she took today and couldn't figure out how she came up with so many wrong answers. The test was so easy.

Ashley's history book caught her eye. She needed to do a report on one of the founding fathers. The report was due tomorrow. Mrs. Addison gave out the assignment the first week of class which was six weeks ago. She opened the book and quickly read through the entire thing. She decided to do a report on Ben Franklin. At her computer, she typed out a 20-page report in just over an hour. She did have to take a bathroom break.

"Dammit!" Ashley said, arriving home from school the next day. "What's wrong with me?"

She took her history book out of her bag. She slammed the text to the floor and jumped on the stupid book. When she had turned in her history report and stood up to say a few words about her project like all the students had to do, all she could say was that Benjamin Franklin was on the one hundred dollar bill. She couldn't answer the simple questions Mrs. Addison asked and the other students laughed at her. That was not the bothersome part. She was used to not knowing things and other people thinking she was stupid so that was no big deal. The bothersome part was that everything was so clear in her head as she typed up the report yesterday. It was just like what happened the day before in math.

Questions raced in her mind. How could she know something and then not know it? Why did she suddenly know something? How did she prevent suddenly knowing something? It was so much easier not knowing.

There was a gentle knock on her door.

"Ashley?"

She looked over from where she lay on her bed. It was Mike.

"Not now," she said. She wasn't in the mood. She was in a foul funk.

"But you said..."

"Not now!" she yelled.

He cowered back.

"Sorry," she said calmer. "I had a bad day."

"Can I help?" Mike said, daring to enter.

He really liked Ashley and not just because she would suck him off. Yes, that was 95 percent of his reasoning, but Ashley had bigger tits that her younger sister and was curvier. He also liked the idea that an older girl was giving him attention. She was a senior and he was just a freshman.

"No," she said at first then said, "Have you ever known something but not know why you know it and then completely forget it?"

"Yes," he said, boldly sitting on her bed. The desire for a blowjob overcame the risk that she might explode at him. He wasn't sure of her question but he thought he had done it before.

"Like when?" she asked.

"Um..." he said. "It was like..." Mike struggled to come up with something. "So you know it but then you don't?"

"But you don't know why you know it. You knew you didn't know it but now you know it and you don't know why and then you don't know it but you know you used to know it."

Mike's head spun. He didn't want to think. He just wanted his cock sucked off.

"So like when you forget a good friend's birthday?" he hesitantly asked.

Ashley sat up and looked at him directly. Mike preferred she stayed down so he could straddle her neck again. He liked doing that.

"After you left yesterday," she said, "I had all these great thoughts in my head. I felt smart and I wrote a 20-page history report."

"20 pages!"

"Yes, on Ben Frankfort."

"You mean, Ben Franklin?"

"Yes! See? I'm stupid again!"

"You're not stupid. You suck great dick!"

"Thanks," she said, smiling. That was nice of him to say. "So I know all about the guy yesterday and write my report, but when I get to school and have to talk a little about it, I don't know anything. I don't even know the stuff I wrote in the report. My teacher thinks I copied it from somewhere off the internet."

"That's bad," he said, while thinking she probably copied her report off the internet.

"Tell me about it!"

Mike lapsed into silence. He didn't know what to say.

Ashley lapsed into silence. Talking about it didn't give her any insight into what was going on.

"All my loads are big," Mike finally said. A blowjob was foremost on his mind. If it meant listening to Ashley talk about her weird problem he would do it if it ended up with his cock in her mouth.

"Huh?" she said to the non sequitur.

"I was jacking off to see if I could make my loads smaller for you but all my loads are big."

"Oh? Really?" she said. "How many times did you jack off?

"Like five times."

"Five? You should hardly shoot anything at all after that." Mike had a mystery too. It was good to think about something else instead of her problem. "I don't mind your big loads."

"So do you want to still... ?" he stopped.

"Sure," she said, smiling. She rolled to her back. "Come on."

Mike stripped off all his clothes and straddled her neck. Ashley was the best thing that ever happened in his life.

"You're really hard," Ashley said touching it. His cock barely moved. She couldn't remember seeing a stiffer one.

"It's like I've been thinking about you all day!" Mike said energetically.

'That's sweet," she replied. Ahhhh! The boy had a crush on her.

She began to suck on it. His cock was different today because it didn't have the preliminary cum that her sister caused before she always quit on the poor guy. It didn't take long until his cock was in a wet, gooey state.

"Oh, fuck," he groaned. He was so glad life was equalizing all the painful blue balls Mandy gave him.

Ashley didn't mind when he began to thrust. He didn't penetrate too deeply like most boys did. She liked sucking cock but she didn't like gagging which almost always happened when a guy started to thrust. She kept her lips closed around Mike's shaft. This was kind of nice because he was doing all the work. It gave her a rest. She could start back up anytime she wanted.

"Oh, Ashley," he said, rapidly driving his hips back and forth. A weird wet sound emanated from her mouth.

Mike stopped when Ashley put her hands on his waist. She slowly slid her mouth down his shaft. He groaned. She continued to do the slow motion up and down his rod. He groaned louder and louder. It felt like she was extracting his jizz out. It was amazing. She was so talented.

He finally cried out and began to unload.

Ashley was a quick learner at some things. She was already adept at handling his giant load. She briskly swallowed. She took it all down and didn't spill a drop!

"You're incredible!" Mike praised. He was amazed. There was no one like this girl! His cock couldn't help but throb from the thoughts in his head.

Ashley said, "I don't know why I couldn't say anything about Benjamin Franklin. I could have at least said he wrote Poor Richard's Almanac and invented the lightning rod, bifocals, and the catheter."

"I didn't know that," Mike said. "See? You're not stupid. You just froze up under pressure. It happens to all of us."

"No, I didn't freeze. I don't care that I got it wrong. I just want to know why I knew it."

"You studied but then you forgot it. Mandy told me about you doing your math."

"But why did I study? I hate studying!"

"I don't know," he shrugged. His cock was hardening and everything was being pushed out of his mind except the thought of Ashley sucking him off again. If not that, would she possibly let him fuck her? He'd love to lose his virginity.

"It's weird but I feel so smart right now. I should write my English paper."

She tapped him to get off her. The composition piece was due next week but she might as well do it right now.

"Maybe it's from sucking my cock?" he hastily joked to try to get her mind off of doing her homework. His cock was hard and he wanted her to do it again. She was so, so good!

"I've sucked lots of cocks. That's never happened before."

"Yeah," he shrugged. He didn't want to actively think about the fact that she sucked off other guys even though he already knew it.

Ashley suddenly had a strong thought. She pushed Mike forcefully off of her and sat up. Mike sat cross-legged and faced her.

"I didn't have these thoughts until after I sucked you off!" she exclaimed, pointing at him.

Oh, shit! Mike wondered if he was in trouble. He didn't want his relationship with Ashley to end. He loved having her as his girlfriend. He'd love her even more if she'd suck his cock again.

"Let me suck you off again!" she said excitedly.

"Okay!" he said brightly. Now she was talking!

"Wait! Hold on! Stay right there!"

Ashley raced out and came back with an empty juice glass. Mike wondered what she planned to do with that. Mike didn't care about the glass when she had him sit on the bed with his feet on the floor while she got up on her knees between his legs and began to suck his cock. Mike didn't have a thought or care in the world. This was all that was important to his 14-years of life.

"Let me know when you get really close," she said.

"Okay," he gasped.

There was only way to test her theory. She giggled on his cock because she just used the word "theory". She diligently sucked to try to bring him off fast. She knew he might take longer because he just came but if he always shot big loads then that might not be the case.

Mike groaned. Could there be anything better in life? He doubted it. Possibly fucking a pussy but he had trouble imagining that could be better than this and there was no chance of pregnancy doing this though he figured she was on the pill.

Ashley did all her favorites techniques to drive a guy wild and she had Mike purring. He groaned loudly and she knew it was time. She pulled off and grabbed the glass.

"In here!" she said desperately.

Mike didn't care about Ashley placing the glass over his cock. He was about to cum! He cried out and began to shoot. Ashley watched with fascination as his jizz spewed into the glass. When Mike stopping cumming, he had a large amount of the frothy goodness in the glass.

Ashley swirled the sticky, gooey liquid. Mike remembered seeing something like this in an internet porn clip but he couldn't remember the name. Bugatti?

"Thanks!" Ashley said rising. She gave him a big kiss on the lips.

The kiss surprised Mike. He liked it a lot! It would be fun to kiss more often.

"See you tomorrow!" she said.

He was glad to hear that but he was curious what she was up to.

"What are you going to do with it?"

"I'm going to hide it in the garage fridge for now. I have to think about it. I need to do my English paper first. It's due next week."

As he dressed, Mike realized Mandy was right. There was something strange going on with Ashley. As long as it didn't affect her wonderful mouth and tongue, he didn't care too much. It would take a lot for him to give her up.

Ashley edited her paper for the fifth time and decided it was good. She had an excellently worded subject paragraph, three finely crafted support paragraphs, and a well-thought out conclusion. Mr. Davis should be pleased with her effort.

Mandy entered her room. "Is Mike gone?"

"An hour ago. Why?"

"I ... uh ... I didn't want to see him."

Ashley saw a motion behind Mandy. She craned her head and saw a boy.

"New boyfriend?"

"Yeah," Mandy said, feeling embarrassed.

"What's his name?"

"Brett."

Ashley looked at the clock. "Mom will be home soon."

"They're meeting at the Fisher's after they get off work."

"I forgot. Have fun!"

"Thanks, Ashley. What kind of sign should I put on my door?"

"I won't come in. Are you fucking him?"

Mandy glanced back at her new guy then said to Ashley. "Going to suck him a little."

With Mandy gone, Ashley pondered. It was amazing how clear her thinking seemed to be at the moment. She could envision the answers to so many questions. Most of the answers she didn't even care about like social issues and world peace.

The main thought in her head was why was she thinking so clearly. It did seem to happen as soon as she swallowed Mike's cum. It happened yesterday and the day before.

She knew how to find out!

She grabbed another juice glass from the kitchen and headed to Mandy's room. She stood outside her sister's door and took a deep breathe. Mandy wasn't going to like what she was going to do but this was more important.

Ashley slipped inside. As expected Mandy was sucking on Brett's cock. The cock looked pretty messy. It was much messier than when Ashley had finished off Mike for her. She had to act fast.

"Uh..." Brett said with panic in his eye when he saw Ashley approach.

"My turn," Ashley said, yanking Mandy off the cock. Mandy fell off the bed and landed hard on the floor.

"Tell me when you're about to cum," Ashley instructed Brett.

She plunged her mouth down on his cock. Brett groaned. She was doing something incredible with her tongue.

"I was going to finish him off!" complained Mandy.

Ashley could feel Mandy trying to pull her away but nothing would deter her from her task.

"Ashley!" yelled Mandy but that did nothing. "I'm going to tell!" She immediately realized that was stupid to say.

"Ohhh!' he groaned.

"Cumming?" Ashley mumbled around his cock.

"Yes," he gasped.

Ashley pulled away and grabbed the glass. She put the opening at his cock head.

Brett groaned out.

Ashley's eyes lit up at the sight of his cum. When his cock stopped spewing, there was only about a tenth the amount of cum that Mike gave her.

"Thanks," Ashley said to Brett and got off the bed.

"Ashley! That was so unfair!" protested Mandy

"You can make him cum again pretty fast." Didn't her sister know anything about boys?

Ashley put the glass in a different area of the garage fridge to help prevent confusion. There wouldn't be any confusion because Mike's glass had so much more jizz, but she worried when her state of clear thinking would wear off.

In the morning, Ashley saw the note that reminded her that she had jizz in the fridge. The last thing she did before heading to school was drink down Mike's jizz.

The day was amazing. She loved how teachers were astounded how much she knew about things.

Mr. Shell accused her of cheating off of Aaron's paper during the math quiz, but she wrote on the chalkboard how she derived her answers. Mr. Shell had to stop her so she wouldn't write out all the answers for the other students to see. Mr. Shell was amazed that he was giving Ashley an A-plus on her quiz.

Ashley's friends were equally mystified by her smarts.

"How did you know that?" Jenny asked when Ashley came up with an obscure answer in history.

"Are you studying now?" Elizabeth asked.

"You need a boyfriend," Megan said.

"Is there something wrong with you?" Kayla asked.

Nicole, Amber, Danielle, and Chelsea had questions of their own.

With a big smile, Ashley would only say, "No, nothing's wrong. No, I'm not studying. I'll tell you in a day or two."

The other girls did notice Ashley seemed to be her normal stupid self by lunch time. That was the Ashley they liked.

When Ashley arrived home, she tried to remember the answer she gave Mrs. Addison that wowed the teacher and the other students. She couldn't come up with it. She went to the garage fridge and pulled out Brett's jizz. She looked at the disappointingly small amount. She drank the jizz, feeling it go slither-like down her throat. She noted there was a sweetness of taste in Mike's jizz that wasn't with other guys like Brett.

In her room, she stared at her math text but the numbers, letters, and symbols were confusing. She knew this stuff earlier today. Why not now?

There seemed to be only one answer.

"Ashley?"

She jumped at the sound of Mike's voice.

"Sorry," he hastily apologized.

"It's alright," she said, happy to see him.

"No one answered the door so I let myself in again," he said timidly.

"It's okay," she excused.

"I heard you were really smart at school today," he said.

"You did?"

"It was all over school. People were wondering if it was really you."

"That's cool!" said Ashley, laughing. "I'm not smart right now."

"You're not?"

"No," she said. "Not yet."

"Not yet?" he questioned.

"Do you want to talk or do you want your cock sucked off? Get undressed. I'll be right back."

When Ashley returned with a juice glass, Mike asked, "Do you want me to cum in that again?"

"Do you mind?" she asked. "You still get to cum. It's just you cum in the glass at the last minute."

"I guess not. Why?"

"I like to drink it later."

"Oh." He didn't understand but it was a good enough answer for him.

Mike left Ashley's bedroom deliriously happy. She had sucked him off three times. She had him cum in three separate glasses. He didn't care. She gave fantastic blowjobs. They were so great that he rarely thought about fucking her pussy though he definitely wanted to do it one day.