McFuck 

1) Horny teenage couples in their droves flock to McDonald's for cheap, disgusting "food" every weekend. Sometimes, dipping the fries in those nasty little ketchup tubs gets too sexually suggestive for them, and they head off to the toilets to bang each other. They think it's risque, but almost everyone in McDonald's has no soul and no shame; their faces are deeply buried in greasy, supersized crap, so they barely notice the kids sneaking off for a McFuck.

2) McDonald's employees that are shagging at work are "McFucking". Presumably, the experience of being "Mcfucked" would lead to some serious "McShame", but as afore mentioned, those that spend large amounts of time in McDonald's have no souls, or personalities for that matter.

"Shall we go to McDonald's and get a McChicken Sandwich? We could sneak off for a quick McFuck too, if you wanna?"

"Norman and Shirley were McFucking at the end of last night's shift. I only noticed because I'm new here and still could go to heaven"

McFuck by MagickDio March 7, 2010

mcfuck 

Shorthand for 'McFly is a fat fuck'.

Hey, mcfuck, lose some weight.

mcfuck by Defender of the justice December 17, 2008

McFuck 

Verb, used by a pissed off McDonald's employee.

Employee to Annoying Kids: Hey, you nd your friends get the mcfuck out of my restaraunt!!

McFuck by Matt-0 June 17, 2009

McFuck 

A Big Mac inside of another one

Yesterday i had a McFuck..Now i get the name.

McFuck by Karma666Fuck you March 8, 2011

McFuck 

a disgruntled Mcds employee

used it a sentence: What the McFuck.

McFuck by Missy Bear November 20, 2010

McFuck 

What you say at the drive through when they tell you they just stopped selling breakfast.

Hi I would like an egg Mcmuffin

sorry sir we stopped selling breakfast

GO MCFUCK YOURSELF!!!!

McFuck by Willywonka1991 March 2, 2009

McFuck 

1. someone you fuck without emotional attachment.

2. a "fuck buddy" that only temporarily fills a void.

"I was going to call my ex-girlfriend and see if she wanted to hang out for a while, but I was feeling lazy so I just called up my McFuck and fucked her in the Chic-fil-a parking lot."

McFuck by oodunkin April 26, 2010