Hidden camera with his friend's girlfriend, who is a real slut.

The prediction finally comes true and the friend ends up fucking his best friend's girlfriend, who, despite being told that she's a real slut, doesn't believe it. That's why, in the end, the guy has to invite his friend's girlfriend, prepare a hidden camera for her and fuck her really hard, because she's a real slut, and then he'll pass the video on to his friend, hahaha.