The cheesy/fake grin you make when you are so pissed off that you just want to stab someone but instead you grin and bear it.
My supervisor didn't approve my time off to go to the coast this weekend with my family so I gave him the mc stabby and walked away instead of punching him in the face. stabby
by whosthatgirl April 06, 2009
6 Words related to mc stabby

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