To state with absolute certainty that you will be at an event, then fail to show up without canceling. Usually characterized by also failing to respond to any attempts at communication by those who are waiting.

Differs from other forms of flaking or canceling late, as the offending party does not communicate their non-attendance, and does not respond to any attempts to figure out where he is.
We all waited around for him to show up, and called to ask where he was, but he totally McCheesed us.
by UnclePeaz November 10, 2009
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A McDonalds restaurant character that has been retired for a while now. He had a hamburger for a head.
They've retired a number of other characters, too
by Ryan Thompson January 18, 2004
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A colleague who consistently leaves work ('cheeses it') much earlier than expected, leaving you wondering whether they are actually employed part-time.
"Hey, where's Padma?"
"Sorry buddy, Mayor McCheese has already cheesed it"
"What?! But it's only 3pm!"
by jimmy tsolakis November 22, 2007
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It is a synonym for wang.
Sometimes I like to look at pictures of Rosie O'Donnell and play with my Mayor McCheese.
by Tom Penniman December 9, 2005
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When a married public official cleans the cheese from your foreskin.
That cop will never bust me, I know him as Mayor McCheese.
by Zigi and Arete September 24, 2010
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A pussy with saggy lips that resembles hamburger patties.
She pulled down her pants and she had a Mayor McCheese.
by Grimes263 July 9, 2021
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