step-Mom came from party without panties and step-son fucked her

I woke up in the same bed with him. Why was he naked? Returning home after a walk I caught him jerking off to the cover of a book with a naked woman! Well, I'll watch and control him so that he feels awkward. I can't wait that long for him to cum, because my girlfriend is waiting for me. Returning home late he was already in my bed and to be honest I don't remember much...