Rina calls her step brother in to tell him about a nasty rumor going round the college that he has a small penis. He asks her to quash it but she says she can't lie and has no idea how big he is. Reluctantly he shows and she giggles at his dick and says it is small! When he claims to be a grower she makes him show her. As he jerks off in front of the sexy schoolgirl his dick gets larger and larger and as Rina tells him what a big boy he is he cums all over her bedroom floor!