A fork of Rural Dictionary
A mom's ass that looks like it was destroyed in the 80s and 90s and looks like a diaper. Especially when she wears sweat pants. Droops ever downward and looks and smells like cottage cheese. Sometimes, looks like a box when wearing tight jeans.
(Kid 1) Your not very nice . (Kid 2) YOUR GIRLFRIEND HAS A MOM ASS (Kid1) Well I'll give you that one.