Gemma is getting changed in her room when her pervy stepdad walks in. He tells her to clear up the mess but she knows that the dirty bastard just wants to look at her body. He quickly gets a large bulge in his trousers and she confronts him. When he denies having an erection she makes him drop his pants to prove it - only for a big boner to pop out! This changes things as Gemma is very impressed with his size. She shows him her tits and encourages him to jerk off for her, all the time filming him on her phone so she can blackmail him after he has cum!