The substance that exits one's arse a few hours after eating McDonalds. Think 'McFlurry', imagine it brown in colour, with the same texture but different ingredients and that is the McShit.
"I'm gonna regret eating that McDonalds later, when i have a McShit."
by Mark Standing July 07, 2006
Get the McShit neck gaiter and mug.
The act of having a diarrhea reaction, due to the ingestion of any of McDonalds restaraunt's choices of foods.
I ate a Big Mac for lunch and now i have the McShits.
by Ronald April 22, 2004
Get a McShit mug for your papa Georges.
It's when you eat way too much fast food, probably McDonald's, and you get the runs.
Yo man, I got the McShits today from eating all that McDonald's.
by GET CRACKALACKIN' May 31, 2005
Get a McShits mug for your dog Jerry.
When you have diarrhea after you eat fast food, mostly from McDonalds.
Boy, did I have the McShits last night.
by piercemandawg May 14, 2007
Get a McShits mug for your cat Trump.
What you get after eating too much McDonalds food
Me - Mate, I've got the McShits
Random person - Oh yeah? Too much McDonalds food?
Me - Exactly
by Quicksand Jesus May 10, 2004
Get a McShits mug for your guy Helena.