A fork of Rural Dictionary
Short for the Infinite-On-Off-Syndrome. This annoying bug sometimes happen in Facebook where the chat system turns on and off at a rapid rate.
A: Hello
B: Sup (send as message?)
A: -offline-
A: LOL
B: WTF? (send as message?)
A: -offline-
A: I got the IOOS :P
B: =.=
I don't know.
Instant messaging slang. Usually follows a question.
<Chris> What time do you want to leave?
<Tim> ioo