2 definitions by NotThatGuy2015

The word you use when you really want piss your girlfriend(s) off after they send you one of those messages where she is trying to spark a long in depth conversation about your relationship after you simply say "i am going out tonight."
by NotThatGuy2015 January 15, 2011
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This is a person that is pretty much a sarcastic asshole and/or a slightly balding fuck. They try to make you laugh by tellin terrible jokes about some dead guy that nobody gives a flyin fuck about in the first place. They cant stop talking about needless things in life.
Q: Hey i am trying to think of a description for Mr. Griffin. Can you help me?
A: Yeah man thats easy. He is That Guy.
Q: Isn't that kinda harsh?
A: Nah man he meets the description perfectly.

Example #2

Trinite's are as a whole "that guy"
by NotThatGuy2015 January 15, 2011
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