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Means something that is much more surprising than a simple wide eyes.

also counting: o.o.o.o
Example 1:
random person #1: Dood, I got like $500,000
random person #2: O_O_O_O_O_O

Example 2:
person #1: I'm pregnant with your man's baby.
person #2: O_O_O_O_O_O_O_O_O_O what?!?!

Example 3:
person 1: Hey what's up?
person 2: Nuffin much, you?
person 1: Oh nothing really 'cept I got beamed up to an alien ship and was probed multiple times, other than that, nothing really.
person 2: ...o.o.o.o.o.o
by animechick3344 August 15, 2007
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