Top definition
The act of secretly (or obviously) getting drunk in McDonalds. The teenage acne-faced staff never do shit about it. Bonus points for incorporating a McShit.
Lets grab a bottle and get McPissed.
by Johnyau83m November 23, 2006
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2
General frustration at any part of macdonalds service, food, or even the way food falls onto your carpet or crotch while arranging it after going through drivethrough.
*after ordering 6 mcnuggets and getting 4*

I'M Mc PISSED!!!

*a mcflurry falls into your crotch after taking it from the person, with nowhere solid to place it while you slowly roll down the alley towards traffic*

THIS IS MCPISSING ME OFF!
by Ryan_T January 05, 2009
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