Harry has been invited over to watch a movie with friends Tia and Katie. What he doesn't know is that they have a plan to get him naked and when he gets aroused looking at one of the girls in the film and has to cover his groin with a cushion, Tia siezes the opportunity - literally!
She rubs his groin under the cushion until he has a hard on and then pulls it away and shows Katie. They like what they see and convince him to stand up and undress so they can get a better look.