Punch Club 

A secret society amongst friends, family or work colleagues, in which members may punch each other on the arm without warning. Injuries are common, and fatalities may have occurred but are usually covered up by other punch club members.

The first rule of Punch Club: You do not talk about Punch Club

The second rule of Punch Club : You do NOT talk about Punch Club

dude 1: Would you like to join my club?
dude 2: What club ?
dude1: Punch club
dude 2: What's Punch Club?.......OOOOOOUCH!!!! You DICK!!

Punch Club by dogtanion October 30, 2011

Club Punch 

Occurs after a heated discussion or argument appears to be resolved in a nightclub. One of said participants in argument proceeds to track down antagonist and catch him off guard, punch him in the face, then exit the club before the victim realizes what happened.

Person 1: Man, what the fuck just happened?

Person 2: That dude was talking some shit earlier, so I caught him with a Club Punch!

Person 1: Sweet man, now let's get up on some ass!

Club Punch by nextmanniefresh December 22, 2008