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People with the last name McGuire who have a propensity to lie.
Person a: "Do you know (first name) McGuire?"
Person b: "I think you mean McLiar."
by egg sac July 03, 2018
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2
A spinoff of the Greys Anatomy nicknames for the hot doctors "mcdreamy" and "mcsteamy" but for effboys, liars, and guys that treat girls like shit
Person 1: omg did u hear what happened with Meredith's bf?
Person 2: yasss heard he cheated what a mcliar!
via giphy
by grey48 July 31, 2016
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