I came home to find my little step-brother jerking his shrimp cock in MY room, and it turns out he was watching pegging porn. I flip him over on the bed and start probing his tight hole with my fingers, taunting him about how he must want a pretty girl to fuck him. He can't resist me for long, because pretty soon I'm fucking his ass with my big 8" dick. With each stroke I can see him becoming more submissive; it's clear that he's been fantasizing about his step-sis turning him into a wet, quivering mess for a long time.