That Guy 

Biggest Penis.

That Guy has the biggest penis I have ever seen.

That Guy by Crystalice111 September 3, 2018

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

That Guy by The Legacy December 28, 2005

that guy 

The guy who goes to a high school party after he's graduated high school.

i can't believe "blank" showed up didn't he graduate like 4 years ago

that guy by Rob April 8, 2003

That Guy 

He fools you once, you're mad. Fools you twice, how could he. Fools you three times and he's officially that guy, you know the one. He goes to the bar and he's like "This suit is officially Georgio Armani, my dad knows him", FUCK YOU. I AAAAAIIIIINN'T HAVIN THAT SHIT!

Nightshade is officially that guy

That Guy by Unknowni123 September 2, 2013

that guy 

a person who gives himself nicknames, laughs at his own jokes, and goes around acting like he's cool.

Wow. Have you been around Mike lately? Yeah... he's really being that guy.

that guy by getatmeplz1 May 5, 2011

that guy 

1. (n.) The guy who wears the t-shirt of their own band. 2. (n.) The guy who wears the shirt of the band that he has come to the show to see. 3. (n.) The guy who buys a shirt at a show and puts it on over whatever shirt they were previously wearing.

Dude, don't be that guy.

that guy by richbastard March 26, 2003

that guy 

thers a "that guy" in every situation, he could be that guy who ate the last slice of pizza, or that guy who hit on your girl friend, that guy who who begs for money at lunch, or that guy who FUCKING SHOOTS DOWN YOUR GOD DAMN CHOOPER GUNNER WITH 3 KILLS TO A MOTHER F-ING NUKE!

Guy 1:Yeah i was on a 23 kill streak and that guy shot down my Chopper ginner...
Guy 2: Wow what an ass whole...
Ryan Sandage: Hey guys!

that guy by A concerned Citizen! March 14, 2010