A person who's ass is so big, that it magically absorbs anything that you put in the crack, up to and including cookies, especially Keebler fudge stripe cookies. Anything put in the crack is never seen or heard from again.
A nickname for 1950's actor Stephen Zukowski. Also known as Num Nums Zukowski.
Hey, Num Num's ass crack is showing
Let's put a Keebler fudge stripe cookie in there.
Oh my God!! The adventures of cookie butt lives!!!!