dambass 

Someone who is so utterly dumb, they can't even spell "dumbass" properly.

I read a post on a forum board where this dummy misspelled the word "dumbass", spelling it as "dambass" instead!

dambass by BrainOffense November 29, 2009

Urban Dictionary Dumbass 

Someone who writes Urban Dictionary definitions about themselves, or people who they know, but who are not famous. Esp. when those definition is "*insert name here* is very cool and attractive."

Person 1: Hey! Jeremiah defined himself on Urban Dictionary!
Person 2: What an Urban Dictionary Dumbass...

Urban Dictionary Dumbass by Snowskeeper February 25, 2013

Professional Dumbass

Someone who does stupid shit so often, they somehow become proficient at doing it well

Stan is a professional dumbass, he keeps getting himself out of stupid situations

Professional Dumbass by Garlic S August 25, 2020

Dumbassness 

A non communicable disease that tends to affect young adults but may be noticed in older individuals who continue to be carriers for many years to come.

It was out of sheer dumbassness that he opted to get drunk and get into an arguement with a cop...

Dumbassness by nachomama April 17, 2012

dumbass dad 

When ur dad is a asshole who is emptyheaded and has now real brains but acts like he knows about anything

I have a dumbass dad i think just knowing him makes me stupid

dumbass dad by .Pyro. March 1, 2018

dumbass people 

People whom do not have any common sense what so ever and continuously do stupid things over and over and over again never learning from their mistakes.

human beings are dumbass people.

dumbass people by sfol November 2, 2013

Dumbassfuck 

n. Someone, who by looking at them, it cannot be deciphered if that person is a dumbass or dumbfuck, so he or she is probably both of them.

Look at Jeremiah over there. He's walking around with his pants falling down and dancing like a fool. What a dumbassfuck!

Dumbassfuck by Fartface Jones November 30, 2011