A butt normally on a very large woman that has the look and texture reminiscent of oatmeal.
Homegirl got a big oatmeal booty.
by SaDiZTiKStyLeZ™ April 23, 2008
A female ass that is so nice you would eat oatmeal off of it. A qualifying oatmeal booty usually involves a smaller girl with a beautiful ass.
Damn, check out that oatmeal booty!
by wsucougar08 August 20, 2007