Classic N64 fighting game, updated to game cube. All of the nintendo characters convene in the game to beat the snot out of each other with special moves and various weapons and tools. Gameplay is beautifully simple yet strategic, and even retards like me who can't play video games can develop some game if they play it enough. Best in 4 player mode.
by Ben J. August 29, 2006
A friend so close that, whenever neither of you have a girl to perform sexual activities with, you two agree to help each other out and do the job.
"Yeah man, Jonah and I have known each other since pre-school. We've decided to become Smash Brothers as of lately."
by JHero September 08, 2015
Brothers that are known to sleep with lots of girls and "smash" that thing in the bedroom. A.K.A. Brothers that handle business in the bedroom to the point were she says she loves you and you just met the female.
by tylii fliy October 17, 2008