by Minx137 November 4, 2017

by LilBibby2342 September 6, 2005

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.
by Ultima May 26, 2004

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.
by The Most Hated January 20, 2005

by Gringey Jam March 5, 2005

Adult over Shoulder
or
POSTER
which is another way of saying AOS but a less Suspious way of saying it.
POS
or
POSTER
which is another way of saying AOS but a less Suspious way of saying it.
POS
by Kylee Droom August 23, 2006
