McBluffin' 

pretending that you don't want anything from McDonald's when, in reality, you do.

Often, someone who is McBluffin' will refuse to order anything from the drive thru, then subsequently ask for "a bite" of whatever it is you are eating, and steal all of your fries. McBluffers should be called out before ordering so they are forced to fess' up.

*car pulls up to the ordering window*

McDonald's Intercom: Hi, welcome to McDonald's may I take your order?

John (to intercom): Yep, Just one moment.

John (to Megan): Hey Megan, what do you want?

Megan: I'm actually not hungry, nothing for me thanks

John: Pshhht whatever Megan you better order something I know you're McBluffin'! Last time you "didn't want anything" you ate all my sausage McMuffin!!!

Megan: ...fine I'll have a Big Mac meal

John (to intercom): Yeah I'll have one Big Mac meal, a 6-pack of chicken nuggets....

McBluffin' by called_out_for_McBluffin March 21, 2010

Egg mcmuffin 

Best breakfast item on the mcdonalds menu

Contains delicious ham HAMMMMMM and egg with cheese covered by 2 muffin bread slices

Egg mcmuffin is AMAZING

Egg mcmuffin by WatcherInc August 26, 2022

Egg mcmuffin 

Best breakfast item on the mcdonalds menu

Contains delicious and egg with cheese covered in 2 muffin bread slices

Egg McMuffin is AMAZING

Egg mcmuffin by WatcherInc August 25, 2022

Sausage Egg McStuffin 

Also see happy meal.

Whilst receiving deep-throat fellatio from a woman, one may stuff one's ballsack into the woman's mouth at the same time, the sheer volume of which causes her lips and cheeks to stretch wide open (as though she's making a big happy smile, hence it is sometimes referred to as a happy meal.)

Man, look at the mouf on that chick... I'll bet she'd love a nice Sausage Egg McStuffin for breakfast.

Sausage Egg McStuffin by al-stud December 26, 2009

McGuffin 

An object or person in a movie that has no use other than to drive the narrative forward. originally coined by alfred hitchcock.

the suitcase in pulp fiction

McGuffin by Jeorge "of the jungel" Boosh April 9, 2005

McMuffin duffin 

Shoes that are weird versions of the original

Those new Jordan ones are McMuffin duffins

McMuffin duffin by Dmv prankster gangster February 4, 2021

Bitch McMuffin 

1. A slutty girl who is overweight and has a visible muffin top.

2. Girl who sells her body out for food

Dat girl goes to McDonald's and fucks the manager for free meals, what a bitch mcmuffin!

Bitch McMuffin by Tehgiz May 21, 2014