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2. OoS
Out of Sync. Problem that used to plague Age of Mythology's online matchmaking service, ESO, until a patch fixed it. Any one player being "out of sync" would crash the game for all players involved. Only comes up now in rare instances.
Fizzuck, I got teh OoS and my game crashed. CURSES BE TO ZEUS!!
by Cataphract_40 Sep 21, 2004 add a video
1. OOS
Out Of Stock. As in, a retailer is selling something and they ran out of it.
Check out this deal at somewebsite! It's a total steal! Oops, it's OOS.
3. OOS
A tech term that means "Out of service"

It can be a site, server or a provider
ex.
Yahoo is now OOS

or
internet provider is OOS
4. OOS
1: Out of stock, as in a brand being sold out.
2: Out of style
1: Aw man! The shoes I wanted in my size are OOS!
2: "Did you see Ashley yesterday? Her Juicy trackpants are so OOS!"
5. oos
The sound a vagina makes when a large object is thrust into it.
oos oos oos oos oos oos oos oos oos
by gabeZilla Dec 7, 2004 add a video
6. OOS
it means your penis is cold.
"uumm... OOS"

"gtfo noob lol"
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