A person who posts the names of people, whom they make like or dislike, onto the Urban Dictionary website for whatever pety or creepy reason. If not just to take up the time of the editors.
Dude: I'm going to define larry as "A gay ass motherfucker" on Urbandictionary.com!
Other dude: You're kind of a Rinsed bin aren't you?
Other dude: Look it up!