a combination of the words "fat" and "retarded"; an adjective describing a fat, stupid person
Jeanette is completely fatarded.
by Dr. J1221 April 21, 2009
1 more definition
Short for fucking retarded. Meaning very very stupid. Can add even more emphasis by saying fucking fatarded.
After Joel put a staple into his head by accident I said, "You're so fucking fatarded."
by Ryan December 22, 2002