Melissa was doing her homework when she heard Bobby come in. It was late, and she knew that would mean his calves and thighs would be hurting him. Coach was pushing his long distance runners hard because for the first time in a long time he had a team that had a real chance at taking State. She knew he'd take a shower, and then ask her to rub down his legs. He always did.

But she didn't mind, really. He was a good brother, by virtue of being compared to the brothers of her friends. Her friends all hated their brothers and told horrible tales of mean things they did to their sisters. But bobby wasn't like that at all. He was sweet and caring to his sister, and she knew it. She appreciated it too. That's why, half an hour later when she heard her brother's plaintive cry "Melissa? I need it bad tonight" she answered back "Be there in a minute." and wrapped up her homework.

She found him on his bed, flat on his back, as usual. Once he lay down it was hard to get him up again. He'd laid out the liniment and other stuff she used on his legs. He had on the loose basketball shorts he used as pajamas.

Melissa wore her PJs too, a set of pale purple baby dolls that were see through for all intents and purposes. It wasn't until she had her hands covered with the smelly liniment that she realized she had forgotten to put on her terrycloth robe. She didn't usually expose herself to her brother this way.

But it was too late now. Her hands were already messy and anyway, his eyes were closed and one arm was across them. As she made the first strokes that would loosen up his tight, cramping muscles he sighed.

"Man that feels good Melissa. I don't know what I'd do without you."

She continued to poke and press and squeeze his muscles. She was used to his compliments and knew she was an accomplished masseuse by now. On legs anyway.

She smiled as the front of his shorts began to tent up. He was getting a hardon. She was used to that too.

He ALWAYS got hardons when she worked on his legs. The first couple of times she had accused him of being some kind of pervert, but he swore it wasn't because of her. He hypothesized it was just because the relief from his pain was so pleasurable that his hormones got out of balance.

What a crock.

But he wasn't an asshole about it, and he never tried to get her to do anything sexual. He was actually kind of a gentleman about it. And, the fact was, she was kind of proud that she could produce an erection like that when he was in such pain... and that she did it by touching parts of him that weren't sexual at all.

She knew he jerked off after she left. One night she'd left her rings in his room and when she went back to get them he had his eyes tightly closed, his member in hand and was beating it furiously. He was so involved that he didn't even see her come in, and she was able to duck back out before he was aware she was there. All she could think of until she finally got to sleep was who he was thinking about as he did that. The thought that it might be her wasn't repulsive, but she had a hard time believing he felt that way about her.

She'd been on plenty of dates, and had necked heavily on some of them. Once a guy had gotten so horny that she had to jack him off to keep him off of her, so she knew what that thing in her brother's hand felt like. She'd only had a glimpse, but his looked... interesting. She was interested enough to stick around several times to listen at his door when she left the room. Every time she heard the slap slap of his arm hitting his stomach as he jerked off his stiff rod.

She ran her hands up the front of his thighs. She could feel the rock hardness of the muscles there. He really WAS in pain tonight. Sometimes she thought he faked it, just to get her to run her hands over his legs.

He was fully erect now. In the beginning he'd tried to hide his erections from her, or lay it down on his stomach so it didn't show so much.

But both of them were used to it by now and he never bothered any more.

Because of that, she got to see a lot of his balls. When his penis stood up, it held the leg of his shorts open and she could see the base of his shaft and that amazing pair of balls quite clearly. His balls were big and full, almost swollen looking, but she knew it was normal. His young body kept them full, ready to supply that hard thick rod with seed to pack into some girl some day. She didn't think he'd ever done that yet. He spent too much time training and too little time going on dates.

She dug into his tight muscles and he groaned, uncovering his eyes and lifting his head. "What are you trying to do... Kill me?" His eyes widened as he saw how she was dressed... or rather not dressed. "You forgot your robe Melissa" he went on. "Mom will kill you if she sees you in here like that."

"No she won't because she's not here" said his sister, poking her thumb into his leg hard. "She called and said she had to work late." Melissa noticed that the cloth pressed against the tip of his hard penis was getting darker, like it was getting wet. "Besides, you've seen me in lots less than this."

He let his head fall back with a groan. "Yeah, but give me a break sis, I'm only human. I mean look at what you do to me!" They both knew he was talking about the very obvious erection in front of her face.

She moved to the inside of his thigh and he spread his legs. "I thought you said that was just hormones released by the remediation of the pain." she said.

"It is" he moaned. "It has to be, because if it isn't that means I'm getting a boner for my sister! That just doesn't happen."

"Sure it does" she said, continuing her work on the inside of his thigh right beside those full swollen balls. "Amy Johnson told me her brother sneaks in her room at night and beats off while he thinks she's sleeping. She said she teases him by pulling her shirt up so one of her breasts shows."

Bobby's head lifted off the bed again. "You're shitting me! She actually told you that?".

"Yup, and you remember Robin Amonson? She was in your chemistry class last year?"

"Yeah, she moved away during the summer." he said.

"Well, the reason she moved is that her brother knocked her up." Melissa continued the massage like they were talking about what brand of hot dogs was best.

"No shit?" he gasped. "How'd you find that out?"

"She and Amy Baldwin were best friends. Amy says that Robin claimed he raped her, but that she was going to have the baby and keep it, so her parents made her go live with her Aunt or Uncle or something."

"How could a guy even think about that?" he said.

"Am I THAT ugly?!" Melissa pretended to pout.

"That's not what I meant" he said through clenched teeth as she dug her thumbs into the front of the other thigh. "You're gorgeous and any guy would want to bang you, but how could a guy force himself on his own sister?"

"Well, between you and me, I think that rape thing was a little overblown. I saw her with him before and she didn't seem to be afraid of him or anything. They were at a party and she was leaning against him. He had his arm around her and they both had dates at that party." Melissa put oil on his thigh and pressed her hand into it. It was slipperier than she thought and her hand slid into the open leg of his shorts. Before either of them knew it her hand was cupping his balls.

"Melissa?" said her brother in a strained voice. "What are you doing?"

she jerked her hand out of his shorts. "My hand just slipped, that's all. No big deal, OK? I'm not trying to rape YOU."

"Well give a guy a little warning in the future!" he was trying to make light of the situation, but his earlier statement was still in her mind.

"Do you really think I'm pretty?" she asked.

"Yeah, I do." his answer sounded... forced for some reason.

"But this..." she hit his erection with the back of her hand "isn't because of me, right?"

He jerked and his head came up again "HEY! Watch it! Of COURSE it's not because of you. That'd make me..."

"Horny?" she said with a grin.

His head went back down. "I don't' want to talk about it any more." He put his arm back over his eyes.

Melissa had a feeling he was on the verge of admitting something to her... something that made her feel... tingly. She'd never thought of her brother that way before, but he was the nicest and most considerate boy she knew. He didn't have a girl friend, which was odd because all the girls who knew him wanted to go out with him. He went out once in a while, but never with any girl to the exclusion of all the others. She decided to take a chance and play out her hunch.

"Bobby?" she said, running her hands up and down his right leg with a light touch.

"Hmmm?" he answered.

"What do you do when I leave the room after I work on your legs?"

His arm came up and he looked at her through half closed eyes. "What are you talking about Melissa?"

She stopped, her hands resting on his thighs. "I asked you, what do you do when I leave here? About that." she slapped his boner with the back of her hand again and he jerked.

"I don't want to talk about this Melissa" he said flatly and covered his eyes again.

"Why not?" she asked, pushing her hands closer toward the gaping legs of his shorts. "There's really nothing wrong with it you know. Everybody does it."

Bobby didn't say anything, but the wet spot at the tip of his cock got bigger. Her hands slid higher, the fingertips going into the legs of his shorts. His hips twitched. Her hands stopped when her fingertips were beside the thing that was tenting his shorts. She could feel his pubic hairs on her fingertips, but she made sure not to touch his penis or balls.

"Come on Bobby... talk to me." She gave her fingers just a little flex so her fingernails tickled his skin.

Suddenly both his hands were covering hers, pressing them to his skin and he was half sitting up. "Why are you doing this to me Melissa?" he said, his voice quite serious. "Isn't it enough that I love you and respect you? Isn't it enough that I watch over you and keep the creeps off of you? You obviously know what I do when you leave or you wouldn't be asking me this. Why? Why is it so important for you to know?"

His eyes flickered to the front of her baby dolls. She knew that, leaned over like she was, her breasts were hanging down and that he could see them quite plainly. She felt the muscles under her hands flex, and the stain on his shorts got bigger still. There was a wild look in his eyes.

"Calm down" she said. "I'm not grossed out. I don't think you're a pervert. I'm not afraid of you. I love you too, and I just think it would be better if we could be completely open and honest about... things."

He stared into her eyes and the wild look softened a little. "And If I said I thought about you after you left... ? What then Melissa?"

She felt a little faint. She was RIGHT! He DID think about her while he masturbated! That made a little ball of heat explode in her loins. She licked her lips.

"Then I'd have to admit that I've thought about... helping you... I mean I help you with your other problems... you know?"

He groaned, and fell back again, taking his hands off of hers but not making her remove them. He covered his eyes again. "Come on Melissa, don't tease me. I don't tease you. This is hard enough as it is."

She giggled. "It certainly IS hard enough." She giggled again.

She slid her right hand over to the base of his cock and up to grasp it firmly.

"And I'm not teasing."

Before he could react she gave his cock an experimental up and down stroke. About the same time she gave it another stroke she realized he wasn't breathing.

"Bobby?" she said, stopping her hand, but keeping her grip.

His breath sighed out in one long exhalation. "I don't believe this is happening."

She gave it another stroke. "Well, it IS happening. And it feels... interesting. Do I get to help you or not?"

He lifted his head again. Her hand was moving under his shorts. It looked like there was a puppy or something in his shorts, trying to get out. "Why do you want to help me?" he said, his breathing faster now.

"I don't know. I like you? I'm curious? I'd like to see what happens? The last time I did this was in a dark car and I didn't get to see anything."

He sat up straight. "What do you mean... the last time you did this?"

Her hand had stopped as he sat up. She gave his hard meat a little squeeze. "Joey Gardner? That guy I went out with a couple of times? He got a little... excited one time and I had to sort of cool him off. I only had to jerk it maybe four or five times and it was all over. I've already done you more than I did him."

He stared at her and then at his lap. "This is crazy!" he said.

"Come on Bobby" she pleaded. "Let me see what happens. Just this once."

In the end he caved in and raised his hips as she slid his shorts off. It had felt big in her hand, but when she pulled the waistband of his shorts past it and it flopped up and smacked his stomach she thought it looked HUGE! That ball of heat was back in her stomach.

He lay there looking at her, breathing deeply.

She reached out gently and grasped it again. The tip looked funny, with a little slit in some shiny skin that was all wet. Then there was a circle of semi loose skin that bulged out and became the shaft.

She stroked downward and the skin moved!

It uncovered a big purple knob that the slit was centered in. As she stroked back up the skin moved and covered that knob. It was amazing how flexible that skin was. And it was so thin. There was nothing on her body anywhere that was anything like that. She stroked up and down several more times, watching that thin skin uncover and then cover up the knob.

He groaned and she looked at his face. He was holding himself up off the bed by resting on his elbows. His eyes were watching her face.

She smiled at him and said "It's beautiful Bobby! I had no idea it would be beautiful."

"So you know what's going to happen if you keep doing that?" he panted.

"I know it gets all wet and slippery and makes a mess." she said. "But not exactly how."

"Well, go a little faster and you'll find out." he croaked.

She increased her speed and the big column of hard flesh began to flop back and forth as she didn't yet have a rhythm going that would keep it straight.

"Oh shit... oh fuck... Oh Melissa... here it comes... OH SHIIIIIIIIT!!" he moaned and his hips came up off the bed as his elbows collapsed and he fell back. She kept jerking, not knowing when to stop and suddenly there were streams of thick white fluid flying everywhere.

His cock pulsed five times, during which she was flailing away at it. Some went straight up, some to the left, the right, up and down. Melissa herself was splattered with it. Her baby dolls got spots of cum in various places. A big drop splatted on her throat and a long string of the stuff hit her face, going from cheek, across her open mouth and onto her chin.

She was so amazed at the volume of the stuff, and the way it just went EVERYWHERE that she didn't realize she had some of it in her mouth until she closed it.

Her initial reaction was that it was disgusting and she wanted to spit it out. But by the time she actually processed the idea to spit, she'd already tasted it, and realized it tasted salty/sweet in some strange way that wasn't disgusting at all!

She was having trouble jerking on his penis now because it was getting soft, and about then his hand fell on hers and he gasped "OK, enough".

She took her hand away and saw that the top of her hand was covered with the slippery stuff. It felt warm and, without even thinking about what he would think, she licked a big glob off of her hand.