O.o

[Sarah]

Depending on if there are caps, or where they are/how arranged, here we go on text exotes:
1.)
o.o : blank stare, as in Youve just lost me Or I care about this...Why, again?
2.)
O.o ; o.O : Confusion, usually used together.
3.)
O.O : Suprise, shock.

[Sarah]

shock, puzzlement, misunderstanding; raised eyebrow, skepticism
generally used in online chatting

[Sarah]

A surprised, disturbed or confused emoticon.

[Sarah]

A face you use to stand for when you are puzzled or baffled.

[Sarah]

it depends. either you use: o.o, O.O, O.o, or o.O theres a good chance its for something you couldnt believe you just heard.

[Sarah]

–emoticon

A commonly emoticon used on the internet to indicate confusion
A surprised look
(used to specify the feeling where you dont know whats going on)
Over-used in instant conversations like the internet short form of laugh out loud; lol.

This emoticon has been used in several different ways. Some of them, you may recognize:
o.o , o.O , O.o , o_o , o_O , O_o , 0.o , o.0 , o_0 , 0_o , 0.0 , , 0_0 , O.O
Aside from the ones given above, there have been several people who customized them. For example; o_______o , o_o;; , o_o and so forth...