Fran looked at herself in the mirror and wished her boobs were bigger than the small “b” cups she’d been born with. She pushed them together with both hands and sighed.

Her one year older brother was passing by and saw her through the slightly open door. Seeing her topless wasn’t anything really new for him, but he stopped to appreciate the view nonetheless.

“Whatcha doin’, sis?” He asked.

“Are they too small?” She asked him, so he entered her room.

“Too small for what?” He asked. “They look just fine. Maybe even perfect for your size, truth be told.”

Fran was a petite girl, only about five feet tall, with a trim little behind. All she was wearing was panties, plain white cotton ones.

“Why don’t boys like me, then?” she asked him. “It’s because they’re too small, isn’t it?”

“I don’t think they’re too small.” He told her. “But there’s only one way to find out, really. “

“What way is that?” she asked.

“We have to see if a cock can fuck them.” He said, straight faced. “If one can’t, then the only way boys would like you is if you were a really good cocksucker.”

“Will you help me find out?” she asked. “I really want the boys to like me. “

“Well, just this once. “ he smiled. “But you will owe me big-time for this. “

“Okay, Steve, I’ll pay you back however you want.” She agreed. “What do I have to do? “

“We’ll cross that bridge when we come to it.” He told her. “For now, start by opening my pants and taking it out.”

She took two steps closer to him and unbuckled his belt, then opened his zipper. She pulled his pants down, exposing his boxers.

“Take it out and get it hard.” He told her.

“How do I get it hard?” she asked, pulling his boxers down, too. She looked at his cock, the first she’d ever really seen.

“Take it in your hand and stroke if gently.” He told her. “Don’t grip it too hard, okay?”

“Like this?” she asked shyly. A moment later, her question was answered for her, as it grew rapidly in her hand.

“Are you ready to see if it fits?” he asked, “Lay down on your bed, and I’ll straddle your chest. Use you hands to squeeze them together around me while I move between them. “

“Okay.” She said happily, and bounded up onto it, laying on her back. “I sure hope they’re big enough. I’m not sure I want to suck it.”

“I thought you said you wanted boys to like you.” He said, getting onto the bed with her. He moved onto her chest and laid his cock between her tits. “Sucking it is part of titty fucking, you know. Maybe the best part.”

“It is?” she asked, a little hesitantly. “Well, I guess I better learn, then.”

“Don’t worry, I’ll teach you everything you need to know.” He smiled down at her. “Just don’t forget that you owe me one.”

“I won’t.” she said, pushing her breasts together around his cock. They barely held it as he pumped back and forth.

“Open your mouth and suck on the head of it.” He told her, a moment later. He slid it into her mouth and sighed as he felt the moist heat of her tongue. “Suck it gently and I’ll warn you before I come.”

“What does that mean?” she asked, turning her face to the side.

“What does it mean when I come?” he asked, surprised at the question. “You don’t know?”

“I’ve never done anything like this before.” She said. “You have to show me everything.”

“When I come, a whole bunch of white stuff is going to squirt out.” He said. “It won’t hurt you at all. In fact, rubbing it into your boobs will help them get bigger.”

“And sucking it will make you come?”

“It sure will.” He told her. “Hurry up, or you’ll owe me two favors.”

“Come on my breasts so they get bigger.” She told him, then took his cock in her mouth again. This time, she kept going until he pulled it away and began stroking it with his fist.

She watched, fascinated, as it began spurting wads of creamy white goo onto her chest. Some of it jetted up onto her face and went into her mouth. Her hands got busy rubbing it into her tits as she tasted it for the first time. She rolled the sticky gob around on her tongue for a long moment, savoring the salty musk. She decided it didn’t taste so horrible, contrary to everything she’d heard about it from the other girls at school.

“Did I do it right?” she asked him, as he got down off her bed.

“Perfect.” He smiled at her. “How do you feel?”

“I feel okay.” She replied. “Are we done?”

“Is your pussy wet?” he asked.

She reached down and checked. “A little.” She answered. “It feels nice when I touch it.”

“Let me see.” He said, opening her knees with both hands. “I’m going to touch it, and you tell me if it feels nice, okay?”

He slid his hands up the inside of her thighs and caressed the gusset of her cotton panties, then began tugging them off when they soaked through.

“What are you doing?” she asked, biting her lip. “I’m naked.”

“Does it feel good, what I’m doing?” he asked her. She nodded wordlessly, but he could see the concern on her face about being naked in front of her brother.

“Just relax, little sister, you’re going to love this next thing.” He smiled, then bent his head down and licked up the length of her pussy. “Mmm, you taste nice.”

“Steve, that’s gross!” she exclaimed. “You have to stop that!”

“Why don’t you let me decide what’s gross?” he grinned up at her. “I happen to like the taste of pussy.”

“Okay, if you’re sure.” She said, laying her head back on the pillow. “It does feel good, what you’re doing.”

He let his tongue find her clit and flicked it rapidly back and forth, holding her hips still with both hands. She moaned softly as his mouth moved a little lower and began licking at her asshole, before sucking at the source of her nectar again.

She writhed with passion as he brought her to the very first orgasm she’d ever experienced. He stood up and showed her his cock again, fully hard once more.

“Do want me to suck it again?” she asked.

“Are you ready to go all the way?” he asked. “I really want to fuck you, Fran.”

“I… can I say no?” she asked, whispering. “I’m scared.”

“What are you afraid of?” he asked. “You know I’d never hurt you, right?”

“I heard it really hurts the first time.” She said softly. “Can I just suck it again instead?”

“Okay, but this time I want to come in your mouth.” He told her. “Is that okay with you?”

“You can do it in my mouth, if you want.” She told him. “I got a little taste of it last time, and it wasn’t so bad, really.”

“Okay.” He grinned, moving back onto her bed and straddling her chest again. “Try to do the whole thing this time.”

He fed her his cock again, this time fucking her mouth, and not as gently this time. He was all worked up from eating her out, despite having come just a little while ago. When he was very close, he pulled it back so that just the head was between her lips, then blasted her mouth full to overflowing.

“Ohh god, that was a LOT!” she exclaimed. She wiped her face clean and rubbed the excess into her breasts again. “I need to take a shower now.”

“About that favor you owe me?” Steve said, getting down and doing his pants up once more. “Invite your friend Susan over to spend the weekend, okay?”

“You want to do this with Susie?” Fran asked, sounding surprised.

“Sure.” He said. “Her tits could use some of my come on them to get them bigger, too.”

“Well, I’ll invite her, but I really don’t think she’ll do anything like this, Steve.” Fran said doubtfully. “She’s as much of a virgin as I am, but I don’t think she’s as curious as I am.”

“Leave that to me.” Said her brother. “We’ll get her clothes off and she’ll go all the way, guaranteed.”

“Are you sure? I can’t imagine her doing ANY of this.”

“Well, I can.” Steve grinned, and Fran saw his cock twitching back to life.

“On my god, stop thinking about it, Steve, or get out of my room.” She said. “That thing is growing again!”

“This time, I’m really going to fuck you, sis.” He told her, walking closer. He caught her ankles and pulled her ass to the edge of the bed, stepping in between her open thighs. He opened his pants once more and got his cock out again.

“Steve, please don’t hurt me.” She begged, feeling him rub the head of it up and down her pussy.

“I’ll try to do it as gently as possible.” He said. “By the time we’re done, you won’t believe how good you feel. The pain will be a distant memory, I promise.”

“Okay, I trust you.” She said. “It’s already starting to feel good, what you’re doing.”

“This is just the beginning.” He smiled. “I haven’t even started yet. This is just the tip of it, and it’s still on the outside.”

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