At her high school graduation, Emily was feeling particularly excited. On one hand because she was going to a renowned college after summer, but more importantly it was because her older brother Dylan had promised her a very special gift if she graduated with good grades. She'd almost always been a straight-A student, except for that time back when she discovered masturbation. She got a few B's that year. But this time she got nothing but A's, which was to be expected, really, considering her track record - this year it was no doubt motivated in part by the potential of aforementioned special gift.
Her brother was a couple of years older than her, getting his master's degree next year. While not the best with studying nor grades, he was quite experienced in other areas of life... After the traditions and celebrations at Emily's high school were over with, the family all went out to a fancy restaurant for a celebratory dinner, and Emily and her brother made sure to sit next to each other at the table. Their parents, aunts and uncles were conversing among each other, so Emily turned to Dylan.
"You have no idea how excited I am for your present," she said in a hushed voice, inches from his ear. "I'm gonna die if you don't tell me. Like, at least give me a hint!"
He smirked and looked around the table, making sure nobody was looking their way. "It has something to do with you being on all fours."
She bit her lip, not quite able to figure it out - she knew it was something sexual, and they had fucked in that position many times. But why would that be such a special present?
"What do you mean?!" she asked impatiently, excited at the mystery.
"You'll find out later, don't worry sis," he said and looked away.
He put his hand on her thigh under the table, moving it upwards and under her skirt. She looked very anxious all of a sudden, and one of their aunts happened to look at her just then.
"Are you alright, Emily?" she asked as Dylan's hand moved further up Emily's thigh.
Emily nodded frantically as a few of their other family members looked at her too. "I'm fine, super great! Just really emotional about my graduation!"
Her comment was met with a few warm smiles, but then they turned around and moved on with their conversation from before.
Dylan didn't flinch, his hand now over her panties which were starting to get damp... She gave him the side eye, loving what he was doing but still angry with him for doing it here of all places! He shrugged and gave her an innocent smile, and with his palm on her pubic mound he pressed his fingers against her. Her eyes widened, and she was forced to hold back a whimper as he increased the pressure, forcing his fingers against her opening on the outside of her panties. She could hear a faint squishing sound from down there as her wetness reacted to the pressure. That was it - she couldn't take it!
Although he was only getting started, she hurriedly whispered him their safeword before she went crazy. For a moment, he was considering not respecting it - it was tempting to continue. He could tell that she really wasn't kidding though, it was simply too much. They liked to be quite daring when out in public when nobody knew they were siblings, but for Emily, it was far too daring to do this kind of thing right next to family!
He moved his hand away from her crotch, and left her to her own devices - her panties would only get even wetter though. Not only from what he'd just been doing, but also from how now she couldn't stop fantasizing about it - and plenty other things.
A couple of hours and a 3-course dinner later, they went back home. Their parents went to sleep almost immediately afterwards, but Emily and her brother stayed up - they had plans. Going into the living room, Emily planted her petite self down on the couch as Dylan just looked at her hungrily, lusting for her... She knew that he liked to look at whatever parts of hers whenever he could, and she loved the attention. So she hiked up her short skirt as she sat down in the couch, sitting with her legs spread in an at least ninety degree angle. Her white panties were showing how turned on she was. Upon seeing the sizable wet spot on them, her brother couldn't help but immediately get down on his knees in front of her.
"Slouch down," he said.
She did, and with her butt hanging slightly off the couch cushions, he pulled her panties off. She spread his legs wider for him, and then he went to town! Having longed for his touch since the charade at the restaurant, she grinned in ecstasy as she felt his fingers rubbing her moist slit up and down. She was wetter than she felt, her juices quickly being smeared all over her vulva and even inner thighs. He placed his thumb on her clit to gently rub it as he, with his tongue, penetrated her tight pussy. She threw her head back, grabbing her top and bra and pulling them both over her head in one swift move. All she was left wearing was the skirt which was not in the way, hiked up around her waist. She placed a hand on each of her small breasts, her nipples quickly stiffening as she played with them while watching her brother's stiff tongue going in and out of her in rapid movements.
It didn't take long for her to reach orgasm like that, her soft thighs trembling as they pressed against each side of his head as she rode out her climax. Afterwards, with the taste of her pussy still on his lips and tongue, he propped himself up and reached for her lips, kissing her deeply. Getting a taste of her pussy from his mouth, she moaned into him.