Used as an insult, describing someone who is poorly dressed, and at the same time has a bad haircut and smells funny. Not to be confused with its counterpart, udder, which is used to describe a mother mammals' underside.
"Did you see Zachary? The 15 year old, with ugly, urine colored hair?"
"Yeah, hes a literal udder. Used to be cool, now he cant be anything but a literal udder."