Mexico City Ad

a blanket term to describe an imagined, completely illegitimate concern to an otherwise well thought-out plan or concept.
their bank heist plan had been flawless, planned over many months with no detail overlooked.

but reflecting from the cold stony walls of their jail cell, they realized they had failed utterly to plan for one crucial factor: the Mexico City Ad.
by adguy November 19, 2008
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Beformance

Someone who has rushed to the theater on opening weekend to see the latest flick. Then acts out, in annoying detail, all of the best highlights of a movie before you've actually seen it. Giving away the plot and virtually every good part of the movie... ruining it for you.
Did you see Michael giving a beformance of the new Planet Of The Apes movie? What an ass! Thanks for blowing it for me... loser!
by AdGuy August 25, 2014
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