Definitions by Phil B.

McPoops 

McPoops are the shits you take right after eating McDonalds. One usually gets the McPoops after eating a McDonalds item that doesn't agree with you or after eatig healthy food for awhile and then going back to McDonalds.

I had the McPoops for a day after that BigMac.

McPoops by Phil B. May 11, 2006