Cap Trick 

A "Cap Trick" is when Mike Green of the professional ice hockey team the Washington Capitals tricks people into thinking he is worth the space he currently occupies, when he, in fact, does not.

Guy #1: "Whoa man, check it out! There's Mike Green, totally deserving of the space he's currently occupying!"
Guy #2: "No man, he actually doesn't deserve any of the space he occupies, ever.
Guy #3: "Oh snap. That's a Cap Trick if I've ever saw one.
Girl #1: "I'm never having sex with any of you."

Cap Trick by Crack Weight September 23, 2010

valve cap rock trick 

name given to a secret relationship between two grown men, of which at least one is married

Josh and David neglected to tell their wives about the extremely dirty activities they participated in on the night of August 3, 2007, which was indeed NOT their first valve cap rock trick together.

valve cap rock trick by jimmy russel August 5, 2007