Siblings should be open with each other, right?

“You two don’t mind me sitting with you, do you?” you say. Your friends could wait. “Why don’t you sit next to your sister, Kyle?”

After a quick adjustment of his pants, Kyle practically jumps out of his seat, scooting in next to Laura. He seems flustered, still unsure of how to reconcile his intense desire with his formerly purely familial affection for her. You smile, noticing how his eyes flit down every few seconds as he takes peeks at his sister’s cleavage, unimpressive as it was. If Laura had been a random girl on the street you doubt he would have thought twice about her. But now to him, his sister was the ultimate expression of womanhood, a girl he had always dreamed of being able to be with, and the sole focus of his lust.

“So, Kyle, let’s talk a bit more about this hypothetical dream woman of yours.” you continue. “This girl you’d absolutely be lusting after. Tell me more about what you'd like to do with her."

"Well if I'm being honest, I'd want to fuck her at some point, obviously." Kyle looks at his sister distractedly, half absorbed in a mental image that was not likely to be very brotherly. "I mean, it’d probably be nice to go a date or two, have a few drinks, but…”

“Really, Kyle?” Laura comments, looking at her brother in disgust. “That’s so gross. No wonder you're having trouble finding a girlfriend."

“Now now, there’s no need to judge Kyle for wanting a quick lay.” you say soothingly. “I see how caring of a sister you are to him. Wanting to know that your brother has a healthy sex life is part of that. It doesn’t gross you out: in fact, it’s interesting.”

“Of course it interests me. I’d be a pretty bad sister if it didn’t!” Laura leans towards Kyle, eager to hear more. “So, say you do get to bring this ideal woman home to get your rocks off. What then?”

“You- uh, you really want to know?” Kyle stammers, unsure. His eyes grow wide as his sister leans in, listening with rapt attention.

“Don’t be shy, Kyle.” you comment. “You and your sister just realized you’re perfectly comfortable about talking about your sex lives.”

Laura nods in agreement, and Kyle’s demeanour instantly relaxes. “Well, I’d want to rip her clothes off the minute we were alone.” he says, gazing at his sister, who smiles and nods, listening intently. “I’d want to just run my hands all over her body…tall and thin, just like I like it…her small perfectly sized tits, her pale freckled thighs…” He licks his lips unconsciously. “I’d want to lay her face down, spread those legs, and fuck that perfect body from behind. For as long as I could, and as many times as I could.”

“Woah.” Laura says, wide-eyed. “That’s so interesting! I’ve never did it in that position. But I’ve always wanted to know what it was like to have someone fuck me from behind like that." She sighs. “Sadly, you’re reminding me how long it’s been since I’ve had some dick in me. I could use a good fuck.”

Kyle’s face contorts as he struggles with the mental image, his sense of taboo fighting with his lust. You’d bet that this was a topic his sister had never discussed with him, nor described so bluntly. You could sense his line of thinking. There was no way she would be talking so candidly if she wasn’t at least a little bit curious...right? She certainly seemed very interested listening to him describe how he would fuck his dream girl. Or in this case, her. You watch closely as he appears to reach some kind of tipping point, steeling himself as he takes a deep breath.

“I mean…I could show you firsthand, if you’d like.” Kyle says, a tinge of **** longing in his voice. “You don’t need a toy when you have the real thing right here. It’s been a while, right?” His hand touches her knee gently under the table.

Laura gasps, jerking back in her seat with a look of horror. “Kyle! What the fuck are you doing?!”