Top Definition
The shortened term meaning 'Appearing Offline' used in instant messaging conversations.
Katie: Hey, hows you?
David: Oh, are you ao'in?
Katie: Yeah, i don't want anyone to speak to me.

Jordan:Hey
(Lizzy is offline)
Jordan:oh man, why you ao'in me? your such an ao'er!
(next day)
Steve: did you speak to lizzy yesterday?
Jordan: No, she blatantly ao'd me.
by Katie, Jordan Thomas November 21, 2008

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