Someone who writes Urban Dictionarydefinitions 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."
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 dumbassit doesn't need to have that to be twenty
Ben:seriously bosco, did you skip 1st grade or something?
Someone who has screwed up so many times that they earn the title of a fucktard AND a dumbass. It's usually used on Ex's (mostly boyfriends) that fuck up big time and continuously lie to get try and get out of trouble, but end up in deeper shit.
"my ex boyfriend is such a fucktard dumbass! he lied about his parents not wanting us to be together!"