An african-american style threat obtained on the account of insubordination often from parent to child (as well as other exchanges). It is not strictly limited to african-americans. Although it is usually just an empty threat used to express reproval, it very well can be followed by a severe beatdown or whoop. The whooping itself can be performed using accessories such as a belt.
O hell no, son, you better not eat that last piece of chicken or im gon' whoop yo' ass!

I heard you dropped outta school and gon' to jail. Thats my boy! But now i heard that you be foolin wid dose white boys! Come here, im gon' whoop yo' ass!
by mak2675 August 19, 2007
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\`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
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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
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