Sometimes, you just don't know how an innocent visit to your stepfather's home will end. This is especially true when you're having trouble with an erection, and your girlfriend is twisting herself into the most revealing yoga poses for everyone to see. And you know it's not just you who's ogling; your old man, who struggles to control his twisted desires, is too. I was trying to outmaneuver him, but I only managed to beat my girlfriend to orgasm.