by Rock38 September 7, 2006

the burnt flap hanging off the side of a stale muffin; often used as an insult to people who are hella crusty
guy 1: dude that girl is sooo hot
guy 2: yeah but she's crusty AF
guy 1: dang it
guy 2: I hate it when girls turn out to be muffin flaps
guy 2: yeah but she's crusty AF
guy 1: dang it
guy 2: I hate it when girls turn out to be muffin flaps
by lizmaster March 12, 2015

by challiam October 2, 2014

by Yes it was January 18, 2021

A very unattractive woman
by Sergeant Doncho June 21, 2019

When you and your loved one want to make sexy time and you have to poop, so you first grab frozen blueberries from freezer. Next, both get naked and and man sits on SO face facing towards SO feet and asks, "Will you lick my __________." Then the person getting licked takes a massive dump on the face of the SO and and quickly sprinkles blueberries on the poop, on the face. SO then cusses you out, wipes the poop from the eyes, and frowns.
Last night I asked my girlfriend to lick my nuts while I sat on her face, but I really had to go poop, too. I ended up pooping on her face and giving her a "Grumpy Muffin." She was not happy about it.
by Desperate Grandpa June 7, 2019

When you cock is shorter then it is longer and wide like a tuna can. The shape of the cock looks like a muffin has been glued on to where the penis would be. This is achieved by being overweight, obese, or born with it. Also see the word chode.
Chase says to his fellow brosefs, "Bros check out my huge muffin dick when I slammed it in the card door this morning!"
by thesatisfyer January 19, 2015
