A disappointed or angry interjection, as if to compare your current situation into getting smashed hard in the scrotal region.
Doctor: I'm sorry Joe, but your leg has contracted gangrene. We're going to need to amputate.
Joe: Fuckin' cocksmash!!
Joe: Fuckin' cocksmash!!
by tfd September 12, 2004

by TFD March 08, 2005
