The ill-desired aftereffects commonly felt after gorging on McDonalds burgers to unnecessary extremes.

Usually presents with fever-like sluggishness and an unsettled stomach.
Can you open the car window please? It's feeling really hot in here, I think I have the McSweats.
by T Liggins September 23, 2007
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Medic. More common form of the meat sweats experienced by McDonalds eaters globally. Profuse persperation experienced from excessive McDonalds "meat" eating.
Grandma always told me three to six square McDonalds meals a day, which i stuck to for three years. I began to sweat all the time especially after eating my fifth double quarter punder with cheese of the day and the Doctor diagnosed me with the McSweats.
by Jimbo January 27, 2005
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