A moron's version of can of whoopass. Used by every idiot nerd at my school because they think it'll make them cool.
Nerd - 'Yo yo yo, I just opened up a can on whoopass'.
Me - 'You're a fag.'
*Beats nerd up*
by Nerdbeater May 16, 2004
Get the can on whoopass mug.
A phrase used to indicate that the target is about to be introduced to a whole world of pain. Specifically, you, by opening this can, are going to unleash the power of whooping (that is, in the sense of attacking and beating, not in the sense of whooping cough) upon their sorry ass.
1. Specific use:
Jerry paused in thought.
"For what you have said about my mother, my girlfriend, and the proud ancestry of my forebears," he announced, "I have every intention of opening a can of whoopass."

2. General form:
"If <offending body> continues with <offending action>, it is totally time to open a can of whoopass"
by Ben Graham October 12, 2005
Get the a can of whoopass mug.
Retribution; or an act which manifests such. Commonly used in conjunction with the verb "to open up a". Also see whoop-ass and to get medieval on.
Are you going to quit whining, or am I gonna have to open up a can of whoopass on you?
by Sparkly Minx November 16, 2003
Get the can of whoopass mug.
A term used when telling someone that you are going to beat them badly. First coined by WWF wrestler Stone Cold Steve Austin.
Boy, you best shut up or i'm gonna open up a can of whoopass on ya!
by Danbridge November 22, 2006
Get the can of whoopass mug.
A blustery threat made by a loud bully boy just before he gets his own ass whooped by a REAL bumkicker.
Bruiser Boy: Hey, I'm going to open a can of whoopass.

Street Sweeper: (He doesn't say anything; he just whoops the Bruiser Boy's ass.)
by Bumkicker Slade April 30, 2005
Get the can of whoopass mug.