Someone who steals others ideas and submits them to urban dictionary
White truffles was my idea. You submitted them to urban dictionary. You are an urban dictionary plagiarist
A person whom overhears or comes across in conversation a word that is urban dictionary worthy and then publishes it on urban dictionary as their on creation without giving credit to the creator.
Friend 1. Did you see what John got published on urban dictionary? It was hilarious!
Friend 2. Screw John, he's a real dick skin. I told him that word last week at the bar and he straight went urban plagiarist on me.