Your older sister and her husband

"Stacy?" You’re shocked to find your elder sister, Stacy, and her husband, Brett Russo, in the swingers section. Stacy is thirty years old and has been married to Brett for twelve years. You’ve never really liked Brett. He’s a decade older than your sister, used to be a college football quarterback, while Stacy was the head high school cheerleader. Even at twelve, you could tell your sister was a moron for marrying him, but she wanted the older varsity athlete husband.

After twelve years of marriage, Brett looks more like a sleazy middle-aged car salesman than an athlete, fat beer belly, hairy chest and legs, stubble, and a smug smile. He’s the definition of someone who peaked in high school. You know that, despite his smugness, every business he started has failed. His bracelet is set to green, indicating his openness to "anything goes," while Stacy’s is set to yellow, meaning "requires consent."

Stacy, on the other hand, is the opposite of her loser husband. Blonde and blue-eyed, she was the former head cheerleader who has only grown more beautiful, hotter, and sexier with age, like fine wine. Even though she’s your sister, you can’t help but notice how sexy she looks in her red two-piece bikini, her ample breasts barely contained in her top, her midriff bare and incredibly alluring, her ass... You really shouldn’t be thinking about your sister like this. And it’s not like you’re non-blood-related step-siblings or anything. You and Stacy share the same blood.

Your eyes flick to Brett’s tacky gold swimming briefs, where the outline of his bulging cock is visible. A pang of jealousy hits you, knowing his cock has been inside your sexy older sister.

"John," Brett greets you, though his eyes are locked on Miranda, openly ogling your bikini-clad colleague who’s pretending to be your girlfriend. "Nice seeing you here... and your girlfriend."

"I’m Miranda," she smiles, licking her lips. You think of Brett as a fat, hairy loser, but Miranda still seems sexually interested in him. Maybe she’s into the sleazier type of men, her reputation as the office bicycle wasn’t exactly unearned.

"I’m Brett, and this is my wife, Stacy," he says with a smug grin, his hand resting on Stacy’s waist. "We’ve been coming to Freedonia for a while, to spice up our marriage."

"We need to," Stacy scoffs, staring annoyedly at her husband. "Brett can’t get it up most nights anymore, too many steroids from back when he played football in college and was hoping to go pro. He doesn’t get hard unless he pops Viagra or we try kinkier stuff, like him knowing I’m having sex with other men."

"I took enough Viagra for today," Brett chuckles, shamelessly caressing his crotch almost proudly. "I’m good to fuck for at least four hours."

"Nice," Miranda ogles his crotch shamelessly, and it’s clear she wants to fuck him while he’s hard for four hours. "You two want to try swinging with me and John?"

You feel your face flush red. "We can’t," you say quickly. "Stacy is my sister."

To your shock, that only makes Miranda’s grin wider and naughtier. "So? What happens at Freedonia stays at Freedonia!" Your bikini-clad colleague, pretending to be your girlfriend, studies your bikini-clad sister and nods appreciatively. "With a sister this hot, I’m pretty sure you thought about her a lot when you jerked off as a horny teenager! I bet you even had wet dreams about fucking your sister," she grins. "And probably even stole your sister’s used panties so you could wrap them around your cock when you fapped, imagining yourself fucking her cunt. Well, you don’t have to imagine anymore, you can fuck Stacy at Freedonia: where indulgence knows no limits and where your fantasies come to life."

"What happens at Freedonia stays at Freedonia," you protest, "but we’re still brother and sister."

"We’ve seen kinkier things here," Brett says with a lustful laugh. "There are no rules against **** in Freedonia. Anything goes! I’ve seen father-daughter couples, mother-son couples. Miranda and I have even swung with such couples. Brother and sister is tame in comparison!" Your brother-in-law looks at you conspiratorially. "Let me fuck your hot girlfriend for tonight, John, and in exchange, you can fuck my wife all night—fuck your sister like you’ve always dreamed!"

You should angrily refuse the proposal. Having sex with your own sister? That’s insane. But looking at how utterly sexy Stacy looks in her red bikini... you hesitate. You consider the proposal.