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1.
To find out if someone's high, you just say adoo. And they laugh.
Dustin- "Kenny, are you high?"
Kenny- "Naw, man I'm not high."
Dustin- "Adoo!!!"
Kenny- (laughs)
Dustin- "fuckin' liar."
by Hailey and Dustin May 24, 2007
 
2.
a word stated by ian upon awakening in an intense drunken stupor.
"Whats going on man? Response:Adoo
by Bige March 25, 2005