Top Definition
Over and out.

Can be used at the end of a status.
Had a bad day today. Going on a date later though. OAO
by T.iara September 08, 2010
2 more definitions
One And Only
Bye now my OAO.
by Enncrave August 07, 2009

when playing with works new interactive white board, I drew a penis into the hand writing recognition programme and it interpreted it as oAo. it is now being used to describe the boss who is oblivous to its deffinition
(insert persons name here) is an oAo
by billy willy April 29, 2005

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