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1.
A term used to describe a 3rd person when reminiscing on a dumb act they performed or a stupid action they did at one time.
synonymous with this fucking guy
Bob: Did I tell you about what Joe did? That fucking guy, he used the scope on his pellet rifle to look at girls in the adjacent apartment. Then the cops come knocking on his door looking for him.

Tom: What a dumbass, that fucking guy needs his balls removed so he won't ever have kids.
by MistahTom June 11, 2006
 
2.
That fucking guy is the epiphany of doucheness and assholism, ever.

That fucking guy is the shittiest of the following.

That guy is the asshole friend everyones always with, but he always gets in other peoples shit and in turn thinks hes the shit.

Fucking guy is usually used to express how irritated you are that hes the fucking guy and he gets lucky as hell, when you dont.

So that leaves us with That Fucking Guy. Not This Fucking Guy, THAT Fucking Guy. The holy of all holy when it comes to just straight forward being that fucking guy. Hard to explain, easy to understand.
Look at that fucking guy. He won the lottery, went to vegas and spent all his money on blow and hookers. Just when we thought he wasnt that fucking guy anymore, we found out he got so fucked up he met a drunk indian that showed him a secret underground ancient vault with billions of dollars in pristine gold artifacts.

That Fuckin Guy...
by c0deezy November 25, 2009