look up any word, like blumpkin:
RUDP stands for Retarded Urban Dictionary Post, it is a personal post on urban dictionary that is irrelevant to everyone else, and thus spam such as Rdog (which is posted as a description of some chicks best friend).
Mike looked up R Dog after watching the first scene of Drillbit Taylor, but found only an RUDP.
by Call me Boudacios Bill September 18, 2011