When you run around doing stupid acts, causing trouble or vandalizing objects.
I dont want to hang with you james, you always be acting the ass Man.
by Big Bing October 23, 2005
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acting crazy! being around your friends and acting clowning around. cracking on people && they family. not giving a fuck.
my homie just came down from tha "A" and best believe we finna act a ass!
by tutti0fruitti October 22, 2009
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to show off, to stunt, to act wild
I'ma act a ass!
Might roll glass!
It's the mista masta and I keep a G stash!
I'ma act a ass!
Might roll glass!
I took a sh*t on the stage at the grammys!

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"Look at that boy swangin' with his head out the window; he actin' a ass!"
by JethroMan April 20, 2008
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a silly or aggressively stupid act performed by your man for no reason other than to be an ass. This act can be either spontaneous or planned in advance.
While standing quietly in line at the cinema, her boyfriend unprovoked, impulsively grabbed her butt and yelled "oh, baby, your butt is getting so big", thus displaying yet another random act of assness.
by Amy W March 27, 2007
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