Any male who is unknown to somebody
My friend Jacob didn't know who Marshmello was so he said ' you know, that Guy, the bucket-head?'
by boaTefAl PoaRseN February 3, 2019
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Used when referring to someone/something who is essentially being the most awesome person/thing alive at any given task.
Damn, Kimbo layed that dude out, mna...he's the guy!
by JerseyJay August 10, 2008
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A generalization of the people who do stupid or reckless actions. Typically someone that no one wants to be like.
Taylor: Meg, just pull out into the other lane.
Meg: But I don't want to be that guy who almost causes an accident. Everyone hates that guy!
by vloveee96 March 25, 2012
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Used to signal idiocy in others by fabricating a sympathetic audience or camera, accompanied by looking in the other direction and gesturing towards the person at fault. Not specific to males.
If someone says or does something that deviates from the normal activities or expectations of the current social company, "this guy" could be used.

An employer that asks a slacker to do his job may look at other coworkers, or just away from the boss, and motion towards the employer with exasperation and say "this guy."

Taken from movies that have characters who "time out" to talk to the camera.
by Daryl G. July 21, 2006
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1. A male at a wedding or social gathering who is oblivious that he is making an ass of himself and embarassing everyone who knows him.
Dwayne was "that guy" at the wedding. He hit on 3 bridesmaids and vomited in the planter outside.
by Bud E Love May 5, 2003
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1 who says that he will call you and then never does, but makes up an excuse for why he didn't.
I was soo excited to be with this guy last night.
by angry jessica November 25, 2004
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