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
..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
..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
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
Short for Anal Only
by Minx137 August 10, 2017
Arresting Officer
"How was getting arrested this time?"
"Not too bad, had a nice AO for once."
by LazySmurf November 28, 2014
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