I was really horny one afternoon and decided to put on my boyfriends favorite outfit (and blindfold). I call him to let him know that I am playing with myself and waiting for him to get here. I tell him to come right in, say nothing, and start eating my pussy. My son apparently overhears, and decides to go lock the door and take his place. He eats my pussy until I am about to cum, and then I stop him so that I can suck his dick, all the while still believing that it's my boyfriend. I try to take my mask off, and he makes me keep it on. Eventually I start riding him and then start to feel weird because he isn't saying ANYTHING. Finally I've had enough and rip my mask off, to find... it's my SON! I immediately flip out. There's no way I was just getting fucked by my son. In the end, he convinces me to let him finish me off. He does in fact finish me off, but not before CUMMING INSIDE OF HIS OWN MOTHER.