look up any word, like kappa:
A girl who you really want to sleep with but afterwards feel sort of depressed that you did. Normally requires vomiting or a gym session to clear your mind. Very similar to the feeling you get after you eat McDonalds.
Bro 1: last night i totally did some mcpoon, want to hit the gym after class so i can get over it?
Bro 2: sure bro, i normally vomit to get over mcpoon, you should try it.
by do'er March 15, 2011
Hot females of the Scottish persuasion.
There's plenty McPoon here in Edinburgh.
by Dirty Daz-D June 28, 2006