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

Urban dictionary dumbass 

A person who gives a dumbass definition for something on urban dictionary

Hey I wonder what ascot means Ill search it on urban dictionary. Ascot : slang for yo ass got bigger. Wtf a real urban dictionary definition would be that thing Fred wears around his neck on scooby doo wow this guy is an urban dictionary dumbass

Urban dictionary dumbass by Mreraofawesomeness July 29, 2012

Urbandictionary dumbass

An individual who leaves words and/or definitions on UD that are unintelligable, opinionated, anecdotal, an inside joke, factually incorrect, erroneous, unnecessary, poorly worded, poorly described, overcomplicated, unlikable or worst of all lacking humor or charm

Definitions left by An Urbandictionary dumbass can be found at the very back of the page with many down thumbs on them. why an editor even accepted them i'll never understand

Urbandictionary dumbass by ElbowTheHappyViking June 13, 2010