Boredom breeds the worst ideas. Like when a step-brother and step-sister with nothing to do let their hands wander too far. At first, he says no—too wrong, too risky—but the more she smirks and teases, the harder it gets to resist. It starts innocent: his fingers tracing her thigh, her breath hitching as she spreads her legs just enough. That sick, guilty thrill of almost crossing the line makes his cock throb. One touch leads to another, until he’s pushing inside her tight pussy, both of them moaning at how fucked up this feels… and how good. She rides him slow, grinding down like she wants to savor every filthy inch. No condom, no pulling out—just raw, messy strokes that have her dripping all over his cock. When he finally cums, pumping her full, they both know this “bad idea” is about to become a regular solution to boredom. [Includes: virtual sex, riding, implied creampie]