Noun. Generic last name for someone (male or female) who is all fluff and no real substance. Does not live up to expectations or promises. Like a real mickey D's Mcmuffin… looks good, seems good, and maybe even smells good but nothing "good" is there in reality. All fluff and no substance.

Can also be used as an adjective i.e. "mcmuffined"

A term used to reference cannabis/marijuana/weed.

A word to call a close friend or a loved one.

A woman with a super-sized muffin top.

Noun
A tasty morning snack of vaginal fluids provided by a ladyfriend.

Verb
The act of eating out your ladyfriend before breakfast because you thirst for her nectar.

- A McMuffin is best served hot and ready after an invigorating morning shower.

A homosexual male.

a flat chested girl whos chest barley makes a bumb in her shirt.