Mctack 

1. When one of McDonald's foods, drinks, products etc. somehow invades the public in a way that says, "I'm lovin' it".

2. When you feel sick after eating something from McDonald.

1. I'm walking down the road one day and I see a Ronaldmobile drive by...you know a Mctack is coming.

2. After eating two Big macs, drinking two cokes, and 3 medium orders of fries, I think a Mctack is going to happen.

Mctack by Riunzo November 30, 2011

McJackAss 

A Term Used To Poke Fun At The YouTube Channel “McJackAck”

“You’re A Fan Of McJackAck?” “More Like McJackAss!” “Why You Into That?”

McJackAss by MacKRacKGacK February 25, 2023

mctaco 

Noun. An iconic fast food worker who, at the time dubbed his nickname was working at McDonald’s and Taco Bell in Grafton Wisconsin.

I’ve always wanted to meet mctaco! Who’s that? An iconic fast food worker who worked at McDonald’s and Taco Bell

mctaco by B-rizzle June 3, 2019

wacko mcjacko 

When someone is acting worse than crazy, they are out of their damn minds!

She thinks she can steal my man? She is wacko mcjacko!

wacko mcjacko by Zcookingmama January 14, 2021

wacky mcnacky

n. something crazy, weird, out of the ordinary, interesting, wicked cool, strangly awesome

adj. the appropiate discriptive response to a crazy, irregular, nifty cool, etc, action

v. to be crazy, wacky, hillarious, etc

that jackass is wacky mcnacky.
did u see that happen, it was wacky mcnacky
i dont know what was his major malfunction was but he was acting all wacky mcnacky today,

wacky mcnacky by snail February 10, 2004

McKackle 

sorry Mckackle isn't a real word but iv decided it to mean a FlatBread sandwich

Hand me a McKackle

McKackle by Shmumpet June 16, 2020

McTACOHUT 

The increasing number of fast food entities that share the same space...i.e. PIZZA HUT/TACO BELL...KFC/A&W...ETC.

ROAD WARRIOR:"Hey...let's pull off the freeway n' get some
quick grub at the McTACOHUT comin' up.

SIDE KICK: "Yep."

McTACOHUT by L.MARTIN September 26, 2005