that guy 

Depending on the context can be a way to point some out. Or used as a durogative. Or as a method of surprise

1. A phrase used to point out a guy in the room.

2. Used in conjunction with the word "oh" can be used as a durogative. A durogative meaning "oh God not him" or "Look guys, it's the guy we dislike, hate, find creep, we blame, find annoying, etc. Kinda like "oh" in the movie h@me.

3.a character in futurama.

"Oh that guy" said the crowd who were rolling there eyes as there "friend" approached .

that guy by Theamazinggeek April 20, 2019

That guy 

a guy who no one really likes but he's just there

''you know that guy''.

''ya''

That guy by that guy5301 April 30, 2019

that guy 

he is what we want really bad but cant get, no matter how much we want him, we crave and crave him more and more everyday.We wish he was in our life so much. and sometimes know that not all wishes come true.

P.S. But most wishes do come true.

That guys the one ,he is who I want

that guy by Mysteryyyyyy22554 May 16, 2019

that guy 

That one person who just snoozes a lot

Wow, Mango is that guy...

that guy by mr. hale October 20, 2019

That guy 

The guy who comes on to an urban dictionary and writes definitions about people's names in a fit of rage. They usually don't realize the effect that this might have on that person. These guys are the fucking worst, often seen getting mad at the smallest things imaginable. They are dicks and get mad if someone tells them their a dick. They refuse to admit they're wrong unless there's a large group of people going against him. They are the guy that everyone hates and takes advantage of people.

If your That guy go fuck yourself

That guy by Baggy pants January 31, 2020

That Guy 

Someone who talks too much and you want them to just shut up for once. This can apply to not just girls, but boys too.

Brian: Yo, that guy talks too much. Can't he just shut up already?
Joe: I dunno man, it seems like he just can't stop.

That Guy by gillber01 February 6, 2021

That guy 

When someone is the best at anything

1.(name) is just that guy!

That guy by i’m that guy March 11, 2021