The expression of extreme satisfaction. One usually chants this when another is humiliated, usually a friend. Invented by Akshizzle.
Danny: I just totally pwnd a six year old girl at my live action roleplaying tournament, Amtgard.
Carson: Danny, you suck at life.
Nate: SHICKASNAP!!!
Carson: Danny, you suck at life.
Nate: SHICKASNAP!!!
by Akshizzle April 2, 2006