boob muffin 

when a woman wears a bra that is too small for her and her boobs poke out of the top.

that woman has some huge boob muffins

boob muffin by crystal meadows August 26, 2007

boobmuffin

A blue berry muffin with a melted part around it that appears to be the arieola... also with a chocolate chip in the center.

Trudi wanted a boobmuffin but the lame clerk didn't give her one. So she sulked.

boobmuffin by Meghan is rad May 8, 2007