Big brother was leaving soon. He had his little girlfriend. Petite little thing, small everywhere. Nothing like his sister, who was built curvy and tall. They would get married and be gone. Then all his younger sister would have was her fantasies.
But ever since she'd come home from college big brother had started flirting with her when she teased him. She wore her short shorts and he slapped her ass, down low where his fingers could curve between her legs. She squealed and looked at him. She could have sworn he meant to do it just that way.
She went without a bra the next day in a too small t-shirt. She caught big brother staring. Saw him hard too. She went to her room and practically fingered herself raw at the thought of him cumming on her bare tits. She wanted him, and thought maybe his girlfriend wasn't giving him what he needed. But why would he want her when he obviously liked smaller built women? Still, she had to offer. The next week was her nineteenth birthday and she got her chance when they were home alone.
"You know, big brother, if there's ever anything you need," she leaned forward on the couch, meeting his eyes, "anything you want me to do for you, you just have to tell me."
"Oh?" He raised an eyebrow. "I just have to tell you what i want you to do for me?"
"Yes."
"What if i want to feel your tits?" He stared at his sister, waiting for her reaction. She caught her breath, hope singing through her, instead her voice came out calmly.
"Why would you want to?"
"Because I've only ever dated Amelia. I've never felt big tits like yours. And because you said anything i wanted." She took a breath and challenged back.
"I'll show you mine if you show me yours."
"What?"
"I've never seen or touched a man's cock before. If you get to feel me up then i get to touch you too. Call it a birthday present. Deal?"
"Fuck it. Deal."
Sister grinned. She could see the bulge In his pants from across the room. Finally she was going to get what she wanted. She stood up and took big brothers hand, pulling him up and leading him to her room because it was cleaner. She shut the door behind them.
When she turned around he was standing between her and the bed, just looking at her. She bit her bottom lip between her teeth and grabbed the hem of the overly large sweater she'd borrowed from their mother. She pulled it slowly over her head, revealing curves that did not exist on tiny Amelia. In fact, she was often accused of being chunky and was more than a little self conscious about it. Big brothers expression didn't seem to be judging her weight as something bad though. He was definitely looking at her, But not with disgust. It made it easier when she cupped her large breasts in her hands, lifting and squeezing them. His eyes followed her movements and he shifted awkwardly.
"Come on sis," he groaned. "Teasing ain't fair."
"Sure it is," she grinned. "We never made a deal about teasing."
She rubbed her nipples through the thin fabric of her bra, getting them to strain at the satin. Big brother all but growled. He surged forward and grabbed her by the arms, pulling her hands away and replacing them with his own. The hooks of her bra were undone in record time and her heavy breasts fell free into his waiting palms. He squeezed and massaged them, pinching and tugging at the nipples until his younger sister was moaning. He just smiled and pinched harder.
"You like that sis?"
"Yes!" She pushed her chest further into his touch. "More! Please!"
"Ah uh," he grinned. "That wasn't the deal. Now it's your turn." Big brother took her hand and rubbed it over the hard on trapped in his jeans.
"You wanted it, sis. Now come get it."
She really didn't need much urging. She'd been dying to touch him for ages. She grabbed the waistband of his jeans and yanked him close, looking him in the eye as she popped the button and unzipped him. She kept that eye contact when she sank to her knees, pulling the jeans and his underwear with her.
His cock bobbed hard and big in front of her face and her eyes widened. She didn't have experience with dicks except from porn but she knew big brother was not small. She reached up and brushed her fingers along his length, watching him pulse in reaction to the light touch. Then she took him firmly in hand and stroked him a few times, drawing out a moan. She looked up into his face, eyes wide and innocent and hand wrapped around his cock.
