\`whoop 'ass\ n.

A dangerous substance, usually found packaged inside cans. When released, can cause major damage to the person it is intended for, and is often used as a weapon of destruction. More often the user warns the recipiant of an imminent opening of a can, if the recipient does not act as desired by the opener.
"If you don't shut up i'm gonna open up a can of whoop ass!"

"If you go ahead with that plan, you're gonna see me open up a can of whoop ass on you!"
by Comic Relief February 28, 2005
You've obvs done something wrong, so someone will come and get you and beat you up litterly
Amy: I cant believe he dumped you! I'm gonna whoop ass him!
by tard-o-licous July 2, 2009
noun - figure of speech meaning "act of violence" generally employed as "open up a can of whoop-ass," meaning to cause large amounts of pain
by Blackmac November 25, 2003
Pursuing this course may cause fisticuffs to follow (on your ass).
Do that again and I'm gonna open up a can of whoop-ass on you!
by mandingoh December 10, 2004
To much whoop ass to fit in a can~! (see: can of whoop ass
I'm about to tap a Keg o whoop ass on dat bizzotch
by Vexlxix November 17, 2003
1. (n.) An energy drink that had a short-lived run in early 2000. Tasted like what is believed to be carbonated piss.

2. (v.) The metaphorical act of beating someone up.

3. (n.) A can (Or similar container, most often a barrel) in which a number of pseudo-torture instruments (I.E. Belts) are contained until the need arises. Most often kept by parents to use on delinquent children.
1. I bought that new energy drink I heard about. It tasted like piss!

2. Boy! I will open up a Can of Whoop-ass on you!

3. Son, don't make me open the the 'can' of whoop-ass!
by guy#3031204 July 11, 2008
A sentence my mom uses when I give her smart mouth or even a bad tone.
Maybe even if I ask her a simple question.
Me : “Mom can I-

Her : “NO!!”
Also me : “accidentally gives her a smart tone”
Her : “Whoop ass time!!! GO GET THE BELT.”
by Tyler The Creators Daughter. December 17, 2019