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1.
An adjective that refers to a chick with a totally awesome, big, round ass.
Kim K is ridiculass!
by Rivrunnr1 November 03, 2011
 
2.
A combination of the words ridiculous and ass.
1. "Wow, she has a ridiculass."
2. "Have you heard the new Nicki Minaj song, 'Ridiculass'?"
by Clark R. Griswold November 25, 2013