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
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."
(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?
THAT GUY is the person who comes to your party gets completely wasted, passes out, pisses, and pukes all over themselves and your carpet; wakes up before anyone else and leaves without cleaning it up.
no example needed to explain this scenerio of THAT GUY
a male that acts in a certain fashion in a given situation, fully knowing such act is considered rude, obscene, or otherwise frowned upon in normal social interaction.
Don't be "that guy" that cuts in line.
Didn't he just hit on the girl he knows you are dating? Yeah, he's "that guy".
Hey, can i bum your last cigarette? It's my last one, don't be "that guy".
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.
1. The one guy who always gets other people into trouble, is always fucking up at everyone else's expense, or is just making an ass of himself and everyone around him
2. Cadet Townsend of the UGA Army ROTC program
Townsend, quit being THAT guy
A person in the background that draw attention from the main subject
Look at "that guy" in the background of this picture grabbing his balls