Coming into your room trying to get the car keys for tonight, so she can go out with her girlfriends, your roommate catches you while you're jerking off to some kinky porn. At the beginning she's a little bit freaked out and doesn't know how to react, but then she thinks it could be fun to tease you just a little, so decides to get naked in front of you while you continue to jerk off...you get really into it, of course, but it turns out that she also wants you to jerk off to her farts, not just to her sexy body :P so she slowly turns around, spread her ass cheeks into your face, and makes you sniff them. Little by little, you're beginning to get into this fetish and it turns out you actually like it a little :) who would've thought? You are a fart fetishist now hahaha