Your nerdy stepsister is supposed to be reading her fantasy book, but she can’t stop squirming on the couch next to you. When you tease her about how wet she is, she tries to play it off—until your fingers accidentally brush against her panties. She gasps, whispering “we’ll get in trouble,” but her hips don’t pull away. The more you touch her, the sloppier it gets, her book forgotten on the floor. She bites her lip to stay quiet, but her legs shake too hard to pretend she wants to stop. By the time you’re done, that “boring” book isn’t the only thing she couldn’t put down.
