when the cheeks of one's rear end come more than 6 full inches away from the base of the spinal columb.
she did the kudawnka-dawnk with her big ol' butt.
by robertseansmiddy May 28, 2006
1 more definition
A fat ass
Back that thang up, cuz you got a big ol' butt
by Da White Man September 09, 2003