muffin busting 

When you are trying to bang a chick but end up glazing her muffin pussy instead

Andy tried to bang Kim but ended up muffin busting her instead. Andy was cool with it..

muffin busting by 47thumper November 9, 2019

Muffin Butting 

Muffin Butting is the act of inserting a muffin into ones rectum before expelling it through a bowel movement.

I spent yesterday Muffin Butting and have been clearing crumbs out of my ass for hours.

Muffin Butting by Forth3k4de October 12, 2016

bustin a muffin 

When a person eats too much food and has a bloated stomach. Refers to a muffin top.

Kim: Khloe, you ate so much yesterday night

Khloe: Yea girl, i'm bustin a muffin

bustin a muffin by Jermaine Dupree February 10, 2013