McSTD 

The STDs you get from having sex or doing sexual favors in a McDonald's bathroom, McDonald's table, McDonald's counter, ect.

Mike: -awkwardly- Dude, I found a bump on my penis...I think its herpes.
Caleb: Woah, dude are you serious? How did you get that?
Mike: Uhm...I did this chick in McDonald's bathroom.
Caleb: Damn, dude you must've ordered the McSTD.
Mike: Damnit!

McSTD by westy1515 August 9, 2010

McStand 

The act of hovering above a toilet while taking a mook to achieve ultimate domage while explosively cleansing your anus. The scarier the mook the better the McStand.

Other pronunciations: McStandy, Shitting-McStanding.

Zach: "How'd poop get on the wall!?"
Chuck: "I took a fat McStandy earlier. Almost fell off the toilet I got so domed."

McStand by Zelkins January 7, 2020

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

McSodomy 

When you get sodomized at McDonald's

I wouldn't go to that McDonald's because I always encounter McSodomy there.

McSodomy by WhiteRaper July 7, 2014

cap mcstuffins 

when you are capping so hard cap is not enough

Girl: “You’re the only guy I talk to”
*Sees her snapscore is 2 million*
Boy: “Yeah that’s cap mcstuffins”

cap mcstuffins by capmcstuffins June 7, 2020

MCST 

The single weirdest school in New Jersey. VPA kids are insane. Health care kids are all Asians and Indians. Digital design kids are weird. Racist epithets are screamed with affection and Jewish kids are anti-Semites. There are 5 black kids in the school, but everyone has a fake black friend. Teachers either act like your friend or act like they wish they weren't there. You wait for the winter to play in the giant snow pile outside of building 3. You can go to the Deli whenever you want, as long as you bring enough food back for a teacher. There are 6 buildings but building 1, 2 and 6 are the same building and no one has ever been in building 5.

Dude, that kid is so weird, where does he go to school?

MCST

O

MCST by CAMBPHJN November 3, 2010

McStfu 

1. When driving through the McDonalds drivethrough, when they ask you what you want say A McStfu.

2. Something To say to somebody very annoying.

1.
Drivethrough Lady: What can I get you today?
Man: Oh I'll just get a McStfu

2.
Nerd: Hey Morse!
Morse: McStfu Before i kill j00.

McStfu by Jake Morse January 9, 2009