One who illustrates characteristics of both fatness and mental disability
"Man that bitch is such a fat-tard"
by phippy August 04, 2004
of or relating to being extremly fat and stupid at the same time thus being fatly retarded
wow that chance kid is such a fattard.
by md dylan June 20, 2006
One who is exceptionally fat and exceptionally stupid.
"Gawd, that fat Debbie is such a fattard."
by Screamadelica March 02, 2007
a fat bastard. this usually applies to parents and/or teachers/priests/siblings/wenchs.
Gabby was telling Diana about how big a fattard her parents were on Saturday.
by Hanmah <(^^)> March 31, 2008