Area of Operations. Army-speak.
When the General showed up at the barracks it was time to unass the AO.
by Parnelli Joneser May 8, 2005
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..is short for ‘Adults Only’ (most extreme videogame rating in the U.S.). See also the other vg ratings: EC(Early Childhood), K-A(Kids to Adults; was replaced by 'E' in 1996), E(Everyone), E10+(Everyone ten years of age or older), T(Teen), M(Mature Audience), AO(Adults Only), and ESRB.
GTA:SA(Grand Theft Auto: San Andreas) is no longer rated 'M', but instead 'AO', and subsequesntly is no longer on the shelves, barely in stock at all.
by Victor Van Styn July 26, 2005
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..is short for ‘Adults Only’ (most extreme videogame rating in the States). See also: EC, K-A, E, E10+, T, M, AO, and ESRB.
GTA:SA is no longer rated 'M', but instead 'AO', and subsequesntly is no longer on the shelves, barely in stock at all.
by Victor Van Styn July 26, 2005
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Armpit odour.
Also known as PO. Similar to BO but somebody with AO reeks very strongly of funky pits.
Piss you!!! That dude that just went past has a terrible case of AO!!! :-(
by Telephony July 26, 2020
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Short for Anal Only
by Minx137 August 10, 2017
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initials of philly playground soon-to-be legend Aaron Owens. Plays for AND1's Mixtape Tour.
"AO aint scared of nobody in no hood" and he'll bust all who come at him.
by LilBibby2342 August 28, 2005
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Arresting Officer
"How was getting arrested this time?"
"Not too bad, had a nice AO for once."
by LazySmurf November 28, 2014
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