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"
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

Im about to open up a can of woopass on you!
by sarah elizabeth July 23, 2005

usaully meaning you're going to get your ass kicked aka you're going down aka you're gunna die etc...
by haha No June 10, 2006

a foot stuck up (your) ass which must be surgically removed by a medical professional a.k.a (yo' mama)
by Miralem B June 10, 2006

by Scorpiette June 10, 2006

by samdog June 10, 2006

by Sonic101TailsFucksCream May 02, 2010
