1 definition by Bluebird42

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1) A saying said by Bart Simpson in seasons 1-9 of the popular animated comedy The Simpsons, until someone got themselves fired and everything got screwed up.

Nelson: You’re stupid! Haw Haw!
Bart: Don’t have a cow, man!

by Bluebird42 March 04, 2018

Buy a don’t have a cow, man mug!