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 5, 2010

AO

Arresting Officer

"How was getting arrested this time?"
"Not too bad, had a nice AO for once."

by LazySmurf November 28, 2014

AO

Stands for Anal Only. Can refer to a lifestyle without vaginal penetration.

Dude my wife switched to AO
That's sweet!

by Minx137 November 4, 2017

AO

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 September 6, 2005

AOS

Short for "Age of Shadows" - the version of the popular online MMORPG Ultima Online that moved focus more onto what items the player has in his inventory than his actual skill.

Ultima Online: AoS completely took away any skill involved whatsoever in PvP combat.

by Ultima May 26, 2004

AO

AO = All Out. Its the hip new slang way of saying All Out. It was made popular when Ethan of HG added it to his vocabulary. And now all the cool kids at school are saying it.

"Dude, that move was f*cking AO!!! You shot them all in their faces."

by The Most Hated January 20, 2005

AO

A reference to the Bum-Bum, Anus, Ass, Brown-Eye, etc.

Stick that shit up in the AO!
A-OoOoOoOoOoOoO

by Gringey Jam March 5, 2005