Taken from the movie Supersize Me, it's the stomach ache that you get everytime after eating McDonalds.
"I love the dollar menu at McDonalds, but these McStomach aches are killing me."
by g0ni May 11, 2006
When you get a terrible stomach ache from eating the shit they put in the food at mcdonalds. Such as the humongous amount of grease taken after consuming 12+ hashbrowns.
He began mumbling words ad random such a bad Mc Stomach Ache. "fuck..... shit..... bitchh......" I couldn't help but notice that he just finished eating 12 hashbrowns.
by EricJamesJoey April 25, 2007
When you eat 12 McDonald's hashbrowns and get a stomach ache and all you can find yourself mummering to yourself are the words, "fuck..", "shit..", and "bitch.."
"Fuck..Shit..Bitch.." "What's the matter?" "I just ate 12 McDonald's hashbrowns and have a Mc Stomach Ache."
by JamesEricJoey April 25, 2007

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