Dude i swear my girlfriend and her best friend are knocking boxes they are always sleeping and showering together.
by bassfreek October 6, 2008
Get the Knocking Boxesmug. by anonymous January 23, 2025
Get the Knockedmug. When a male showers, he vigorously scrubs if "private area" with shower gel, if hairy enough, he has the opinion to get his pubes covered in bubbles, and style it. To complete the knock off super man look, he must produce a "v" shape, where the base of the v hits the top of his shaft, and the hairs stick upward. Then, using the excess bubbles, lay them into the v housing produced, in order to complete the "S". The knock off super man. When this style has been completed, he has the opinion to do the exploding superman, by slapping the bubbles, to explode.
by Piei+1=0 June 4, 2017
Get the knock off supermanmug. When you are urinating when suddenly you need to violently shit. Then, you stop pissing and turn around, firmly pressing your puckered ass onto the seat and unloading an ungodly amount of assham into that poor, poor toilet.
Larry: "Damn, I thought you were taking a leak!"
Jim: "Yeah, sorry. I had a Knock, Knock Motherfucker moment."
Larry: "A what now?"
Jim: "Yeah, sorry. I had a Knock, Knock Motherfucker moment."
Larry: "A what now?"
by The mystery shitter April 27, 2022
Get the Knock, Knock Motherfuckermug. by Flabshlab May 22, 2017
Get the Knockmug. 
