o//

It is a head with one arm. The two slashes show the movement of the arm. So it's a way of waving someone as goodbye.

It has been around for more than 10 years but isn't used very frequently.
Often the shorter version o/ is used instead.

Frank: I g2g to bed now.
Lee: Okay, sleep well. Bye o//
Frank: o//

Japan 'o Clock

The hour in video games where Japanese players are the most active. Expect to get absolutely destroyed by players who are 10x above your skill level.

Friend 1: "Man, we're getting absolutely destroyed by the enemy team every game now!"
Friend 2: "It's more than likely Japan 'o Clock at the moment."

Freak-o-path

Someone who is a literally freak of every second of every day.

John - "Bro I just wanna eat somebody's booty out..."

Jeffrey - "Dude, you're a literal freak-o-path. Get help."

tac-o

a soft bread

Ron: geez I love tac-o!!!
heck just go and buy it

o-o

S u p r i s e d F a c e

My friend: I just bought a X-Box
Me: o-o
Me: Wha-

o-o

s u p r i s e d f a c e

Me: i'm playing minecraft
My Friend: o-o

o-o

A Hawaiian bird that's probably extinct.

P1: Have you heard of an o-o?
P2: No, what's that
P1: I dunno either, but it has a funny name.