dumbtionary

a dictionary, that when read, makes a person dumber.
Jane's IQ dropped 5 points after spending an hour on urbandictionary.com. It is the greatest dumbtionary of any dictionary on the internet.
by eWeb December 19, 2011
mugGet the dumbtionarymug.

scrapble

the attempt to use a word on a Scrabble board that is made up, and only found on urbandictionary.com
Chris scrapbled when she tried to place the word interhype on the Scrabble board.
by eWeb December 19, 2011
mugGet the scrapblemug.