Your girlfriend is giving you a blowjob, but it's not enough for her. She wants you to fuck her ass. You've never really wanted to in the past, and you're not really into it this time either. You cum quickly, and then tell her you just don't like anal. Your girlfriend is disappointed, but then you hear a door open - your step-dad just got home. Your girlfriend gets excited, and tells you she's going to go fuck your step-dad instead!