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to put up your defenses, your guard. Could also be used as a place over crowded like *this place is (deed) up*.
*d up bitch your about to get snuffed*

*damn b the place deed up*
by Romaineheart July 08, 2003
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What's up, Similar to Sup (whats up) people say whaDUP.

A way to open up a conversation with swag.
Yo, dup? Haven't seen you in a while.
by Things R Heeten Up February 04, 2013
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To give a blowjob or act slutty. To give head to anyone when intoxicated just to make people think you are sexually advanced and cool.
That chick d you up?
Yo, cmhere and d me up.
Dawg she always wants to d-up at every party.
by aksgnad June 04, 2006
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Derivation from the word whadup, as in what's up/wassup. Quite handy when chattin.
A: "Ajo Ramooo"
B: "Dup"
by Amino June 07, 2004
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Australian slang for the Downwards Uber Punch. Shortened to DUP, or dup, it is a type of punch achieved by balling up your fist and swinging your arm downwards onto a victims head or body part, keeping your elbow bent and snapping your wrist down as your fist connects with flesh.
by bionicvagina October 29, 2010
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