dumbass 

a person/animal/other organism that does actions/things that are unfavorable and seen by others as stupid, it's also an insult to a person who is pea-brained.

bosco:10+10 is not twenty it don't have ten in it!
Damien: bosco u fucking dumbass it doesn't need to have that to be twenty
Ben:seriously bosco, did you skip 1st grade or something?

dumbass by a wild bandaid May 7, 2017

Dumbass 

Noun

1. Someone who attempts to be a smartass but is too dumb to actually succeed.

2. Someone who holds a stupid, illegitimate or completely baseless opinion with a perplexing amount of self-righteousness.

Guy 1: I think it might be time to have that compound fracture looked at by a doctor dude.
Guy 2: Nah the problem would get compounded Lol
Guy 1: WTF? You are such a dumbass.

Guy 3: Hostel is the best movie that was ever made ever!
Guy 4: Oh my god what a dumbass...

Dumbass by IQuarent April 13, 2015

Dumbass 

Someone who looks up the word "dumbass" in a dictionary.
If you don't know what a dumbass is you really are a fucking dumbass.

Many people don' realize it, but they all sound like dumbasses.

Dumbass by An A Cup February 9, 2018

dumbass 

You

Your a dumbass

dumbass by A bitchy kid November 6, 2020

dumbass 

A person is both stupid (e.g. dumb) while also stubbornly refusing to stop being stupid when asked (e.g. ass)

I couldn't teach him how to use the paintball gun because he was running around with it between his legs like a dumbass.

dumbass by dumbass September 17, 2003

dumbass 

somebody who answers when you yell "hey dumbass!"

mean person:hey dumbass!

dumbass:what?

dumbass by Big LJ October 16, 2006

dumbass 

half the people writing these definitions

gellin means your not cool

dumbass by Seth July 8, 2003