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That guy, is the person who enters an online video game just to mess with people. The "That Guy" is in every game room. He/She can range from someone who just messes around killing his teammates or someone with just a high pitch voice.
That Guy: Oops I killed my whole team again.
You: Oh great its That Guy.

Kid with high pitch voice: Hey guys are you ready for fun?!
You: We have officially found That Guy.
by Todd Feipel May 14, 2008
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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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58
go to www.dontbetheguy.com . That will provide all the definition you need
Don't be the guy who leaves the seat up.
by Jamie May 03, 2004
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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59
- A person who looks, talks, and acts exactly how other people, which you have grouped together as similar, operate in any given situation.
-That Guy

-The fat Hawaiian burger hut owner
-The rich fat Italian
-The fat Chinese kid (SEE CHUNK) who gets good grades and is at least top ten in the pokemon online challenge
-that black girl who takes your order at dirtys and even telemarkets to your cell phone
-the bald/balding short guy with glasses
-The ratty or rodent looking type
-goat looking type of people

by Richard6969 January 06, 2006
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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60
by the chester June 10, 2004
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Golden Shower Plush

He's warmer than you think.

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61
The person that nobody wants to be
Wow man way to ha "that guy"
by 1_cinnamon_1 December 08, 2014
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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62
(n)A person who makes a fun occasion awkward or otherwise boring by being the one guy to disagree with the majority; a person made into an outsider by his ridiculous antics.
(v) being That Guy on any occasion; Being made into an outsider by your ridiculous antics.
"dude look at Rick"
Rick-(proceeds to tell the girl he just met about the history of Judaism)
"Oh god he's become that guy"
"Should we leave him?"
"Yeah, he's already too far gone."

"Bob, you've been That Guying on several occasions for a while now, we all just want the old Bob back!"
Bob-"you guys just don't understand! I REALLY LIKE NINE INCH NAILS!"
Rest-"oh god he just That Guyed so hard it gave me ASL"
by JackJackAttack September 21, 2014
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Donkey Punch Plush

10" high plush doll.

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63
That guy is the guy who does things for the girl hes with or the girl he likes in gratitude of her actions with him.
Cam: I want a massage.

Micki: I will give you a massage.
Cam: I will give you one back, I'm just That Guy.
by JesusCam August 12, 2014
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Golden Shower Plush

He's warmer than you think.

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