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Idiots like u looking up dumbass in the dictionary are dumbasses
Don't be a dumbass
dumbass by tini101goals September 12, 2015
Being completely stupid
forgetful
James is such a dumbass!
dumbass by j_girl23 September 24, 2015

dumbassing

Acting like a dumbass or saying something that is just plain stupid.
Look at Hunter acting a fool. That boy is dumbassing.
dumbassing by definingforthetards October 18, 2015
John Dean Bredehoeft is not a dumbass.
dumbass by Maggsjam March 6, 2016
Dumbass is an idiot who has no clue of what he is say or doing.
Bria is such a dumbass.
dumbass by Cat400 March 25, 2016
Hayden Burke somehow failed English therefore he's a dumbass
Dumbass by Haydenburke55 October 3, 2016