Top Definition
A individual who does not abide by the rules and acts in a more dogish manner towards authority and others and also acts dumb in serious situations but dont necessarily call them a dog but call them a mutt mutt
Damn dude after you got drunk last night you tried scoring with my sister but then she called you a mutt mutt and turned ya down so you got with the fat chick.
by Mutt Mutt January 11, 2017

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