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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

mcjackson burger

a burger made by mcdonalds in honor of michael jackson. its a 50 year old meat in a 8 year old bun
i went to the mcdonalds to cop a juicy mcjackson burger

Tits McJackson 

The female individual in any immediate vicinity with the largest TITS! Especially a nightclub or a party.
D: Hey did you see who just walked in?

J: Yeah man looks like Tits McJackson finally got here.
Tits McJackson by OJdaJu February 27, 2011

Shady McJackson

When a wannabe rastafarian shows up at everyone Penn State party possible, but nobody knows who he is or what he's doing there. You dislike him immensley, however always love to have a drunk conversation with him by the keg.
Hey, Shady McJackson is here!

Who?

The smelly guy with dreadlocks who never pays for a beer but always has a cup filled by the keg.

Oh, right... I hate that guy!

Shady McJackson...

Bruh McJackson

“They call me... Bruh McJackson
Bruh McJackson by Patrik fartsex November 30, 2020