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1.
Its that thick phlegm that developes after eating at McDonalds. Its kinda like a warm thick shake. Happens from the orange drink quite often.
"Man i shouldnt have eaten 3 number 1 extra value meals, i got enough mcphlegm to choke a walrus."
by Donkey Dong February 20, 2007

Words related to McPhlegm

mac mc mcdonalds orange phlegm