Top definition
The person everyone loves to hate and never wants to become.
You're driving and get stuck in the middle of the intersection just as the light turns red. Now, because of you no one can get by. You have now become "That Guy".
by Desiree April 16, 2005
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2
The most annoying person at a social outing or gathering, especially when alcohol is involved.
Whatshisnuts- "Dude, So-and-so was being 'That Guy' at the party last night."
Theotherguy- "Yeah, especially when he kept screaming then telling people to shut up."

by MoStang June 05, 2007
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3
(n.) a hypothetical "guy" who likes to make an ass of himself or does awkward, weird, or unkind things.

This "guy" is usually referred to and compared to when someone is doing something awkward or annoying.
*is making ass of self*
Person: Why do you have to be that guy?
by gamerdude949494949 October 26, 2009
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4
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 05, 2003
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5
The guy who seems to be in every movie, every TV show, but you still don't know his name.
Girl: "Hey, look! Its him again!"

Guy: "Who?"
Girl: "You know, the guy from that movie we saw...? That guy!"

Guy: "Right."
by bowlingbabe October 16, 2010
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6
An individual at any given social event who crosses the line of severe Obscenity/Indecency/Profanity typically involving speech or actions, often vulgar and unnecessary. Doing so defines his title of "That guy". See also; jackass, Andrew, Fatkid.
Party Goer "Yes I do indeed enjoy box wine."

That Guy "I go down on my fat ex girlfriend when its her time of the month"

Party Goer" Oh, so you're that guy, please get away from me"

That Guy " Waaaahhhh You think I'm a fat loser and I only like fat chicks."
by Dr. Ovenglover July 10, 2008
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7
Any person who consistently shows disregard for the normal social behavior of any given social situation, or has no concept of what the normal social behavior is for any given social situation. In addition, this person must evoke a feeling of empathy from within people that are more socially skilled than "That-guy." If this person does not evoke pity, tham he is just a jerk.
There is always that one guy at the dinner who is always there when you are, but you never get there before him and he never leaves before you do, so, you just kind of assume that this person lives at the dinner. And he'll know all the waitresses by name, and probably dropped out of college, but you don't really care enough to get the real story, and you already have enough neative vibes toward this guy because of his akwarness that it really doesn't bother you to write him off as a waste of life.
by Dj Galley October 21, 2004
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