The same as man up; standin' your ground; bein' brave, tough or strong
Dude 1: Man, I ain't ready to fight this nigga.

Dude 2: Come on, bruh. Thug up! You got this!
by sevonmiles October 01, 2012
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A way of compliment towards what a persons urban appearence..
Me and my friend's stay thugged up from head to toe,all day every day.
by Day2Day1nSociety January 05, 2011
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A person who will go to any extreme to get what he wants.Violence and odds will not stand in his way.A way of complementing someone on being a bad-ass.
Man I saw you when you were fighting those 3 guys,you were a straight up thug.
by The Bushrod555 November 24, 2013
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C-Rod's way of saying "hello" to a person of African-American descent.
(Phone rings, Isi picks up)
Isi: Hello?
C-Rod: What up thug?
by Isi Oamen January 03, 2005
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1) Proper way to greet a close friend. 2) Appropriate greeting when answering a phone call.
(Phone rings)
-What up, Thug?

(Best Friend surprise visits)
-What up, Thug?
by Lindsey April 01, 2005
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this is a very uncommon phrase typically used by overweight gay homosexual teenagers who are bored on facebook. it is commonly used as an ending to a status change, tries to represent a cool way to say peace out. but it doesnt work.
"What a fun night. hit me up. swag up thug out"
"Hitting up the guys at the bar tonight, swag up thug out"
''i was tricked so bad by sarah and camille and im gonna try and be cool by saying swag up thug out at the end of my status"
by SCCG September 25, 2009
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