step-Mom surprised by step-son's fat cock

Gosh, I love my step-son so much. His step-father has been gone for so long and we're gotten very close. I mean I remember when I was get his loads out for him every night. I'm just afraid he's getting to the point where he *thinks* he doesn't need his step-mother anymore. You know what..I'm going to go check on him, just like I used to. See what he's up to before bed, I just love him. Oh my...his cock is...it's enormous! This is so unusual for a penis to big so big. Omg and it's my step-son's. I want to jerk his fat cock off so bad. Here, mommy's hand are a little bigger. Let mommy help you. *Lots of hot mommy inner monologue. step-Mom finds step-son taking care of himself. But he can barely get his hands around his fat cock. So step-mom steps in to help. She finds out he was thinking of her ass so she shows him and jerks him off while he smells her stinky butt