AO

..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 August 22, 2005

AoS

Arc of Suck

A term used to refer to bad storylines in TV shows.

It is most often used in Smallville forums to refer to the Season 8 arc when Lana Lang returned to Smallville for a few episodes, during which time Lois was absent.

After Lana came and went during the AoS, Clois really lost its mojo.

by canon_iconic_suckit March 12, 2010

AO

..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 August 22, 2005

AO

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 25, 2020

AO

Short for Anal Only

My girlfriend and I do AO

by Minx137 August 09, 2017

aos

ace of spades- in other words greatest card in the deck

Two people play BS. One draws an aos, and the other yells "BS!" The guy says, "Take it," and the other yells, "Damn! it's an aos!"

by iaintaplayahata20 April 28, 2009

AOing

stands for Adults Only 'ing
means doing an action which is generally assumed adult only, usually sexually orientated.

"wheres miley and rachy gone?"
"they're AOing"
"what?!"
"yeah they're an item now, didn't you hear?"
"kinky"

by SteTipene February 05, 2010