I'm sitting on the couch, talking on the phone with my girlfriend. I start explaining to her how my step-mom has been acting really weird around me lately. She's been super sexual lately, but only while the two of us are home alone! All of a sudden, my step-mom walks into the room, and I quickly hang up the phone. My step-mom starts telling me, "Your girlfriend is such a slut! I think I'm so much hotter than she is!" She strips naked in front of me, and then she pulls my pants off. "I bet that I can give you a better blowjob than your slutty girlfriend!" she tells me. She starts to jerk my cock with her hand while her mouth is on the head of my cock. Then she sucks my cock and shoves the whole thing in her mouth. "Let's see if my pussy is as tight as your girlfriends!" she says as she hops on top of me. She starts to bounce up and down on my cock, and I think my step-mom's pussy might be tighter than my girlfriend's pussy is! After a few minutes in the cowgirl position, she flips over into the reverse cowgirl position. She bounces her tight, MILF body up and down on my cock. "You're going to make mommy cum!" she moans. She keeps riding my cock until I accidentally cum inside of her pussy! "Did you just cum inside of me?" she asks me. "Yeah, I didn't mean to..." I tell her. "That's okay! It's because my pussy is just SO tight!" she giggles.