the person that looked this up.
"You, the person reading this, is the definition of a dumbass"
A person that was adopted and raised by the aunt for 20 years and giving everything but still runs back to her stupid biological mother is a dumbass!
My sister Jessica L Mac is a dumbass!
guy who searches the word "dumbass" in a dictionary.
a stupid person.
"This guy is so stupid, he's a dumbass."
A person who is dumb enough to think he's Jokes are funny
My friend here Erich is a dumbass
A Stupid fish, or a person who is acting like a stupid fish
or a disguised way of saying dumbass