ioo

I don't know.

Instant messaging slang. Usually follows a question.

<Chris> What time do you want to leave?
<Tim> ioo

by Johnno31 August 07, 2006

IOOS

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: =.=

by WhoAmI?IamBartMan December 18, 2010

IOO

In Our Opinion. The plural form of IMO.

"Is Allan the best dressed man in the world?"

"Yes, IOO"

by SexyJosem July 21, 2012

.9.Ieeih Malcz Ioo.9.

.9.Ieeih Malcz Ioo.9.

.9.Ieeih Malcz Ioo.9.

by .6.9.7.6.ArimorylulA.8.3.0.5. September 07, 2025

IOO

Used to define "One Hundred" in Roblox since no-one can type numbers into the chat thanks to an awful filtering system.

Baconhair123: i have IOO coins
Noob11xx: cool

by jss-urban February 04, 2021