To leave your hot wife for a hotter but insane and possibly homicidal girlfriend.
"Aww dude, don't McNair Cari! Melissa owns seven guns!"
by Dedzpot July 7, 2009
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dumb; clueless; out of touch; naive; lost; blind; tone deaf; dumb; clueless; loser; Munson; stupid; uncle rico; dumb; clueless.
The Texans are so McNair for having Bill O’Brien as a coach.
by Joeyexotic April 4, 2020
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The word McNair can be used as a substitute for any word.
"Those shoes are so McNairin'!"
"That girl is such a McNair!"

by Smai the Spy January 28, 2008
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To be shot multiple times. Interchangable with the term swiss cheesed.
example 1

person 1: you heard? Steve Mcnair got shot up by his crazy ass bitch on the side. Straight up Swiss Cheesed.

Person 2: I suppose you could say he got "McNaired."

example 2

New York City, 1999, Police "McNaired" a young Amadou Diallo.
by tgoodman August 2, 2009
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Mcnaired is when your jump off gives the signals that he or she is capable of killing you. Used as a precautionary statement that is really saying: Listen, I think you need to end that relationship before you get McNaired....
Me: Damn, my jumpoff has been texting me all day...I just don't answer.

You: Okay man, don't get McNaired...you better handle that....
by supadax July 7, 2009
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When a man cheats on his mistress with another woman, the mistress (not the wife) has been McNaired.
Vickery's mistress flew into a wild rage upon learning that her lover, married as he was, was McNairing her with another, third woman.
by Abelard McDonough July 13, 2009
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