when one is sooo fat that that individual belongs in the circus or some sort of carnival setting
Man! That bitch is circus fat
by big burls September 17, 2002
1 more definition
When your roommate drags the woman of his dreams out of a bar at 2 AM and Ringling Bros. calls and wants her back.
My buddy Dale brought his girlfriend home and boy was she circus fat!
by Donkeyshow November 21, 2003