(1) A taunting phrase describing something that someone has already done but shouldn’t have done.

(2) A taunting phrase said to someone to encourage them to do something that hasn’t been done.

Origin: 93.9 WKYS
(1) Whatcha won't do is come to work every day smellin like weed, get drug tested and say it's cus I'm black.

(2) Whatcha won't do is start an arm wrestling tournament at your boys engagement party.
by bethesda sehn November 7, 2010
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