O.T.T. 

Usually standing for Over The Top. May be used by older people trying to sound 'hip'

"Sweatheart that girl's bright neon hair is O.T.T."

O.T.T. by coolest chick in town May 22, 2006

o.o 

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 "You've just lost me" Or "I care about this...Why, again?"
2.)
O.o ; o.O : Confusion, usually used together.
3.)
O.O : Suprise, shock.

1.)
Person: (insert technical jargon here)
Me: o.o
2.)
Person: and because of this, such evented happened, at such time, for such reason.
Person: You get it now?
Me: O.o
Me: o.O
Me: That was supposed to be helpful?
3.)
Person: (I'm blank on ideas, but anything that would suprise me)
Me: O.O
Me: Really?!

o.o by Chat de Nuit October 28, 2004

O.J. Simpsoned 

To stab or cut a person with a knife.

Did you here about that knife fight down the street? Yea that gang member really got O.J. Simpsoned. He must have been O.J. Simpsoned at least 5 times but he'll be alright.

O.J. Simpsoned by JoeyJoejo November 15, 2009

O RLY?

When someone says something obvious or irrelevant.

Dude 1: Wow, the internet is full of porn!
Dude 2: O RLY?

Dude 1: have you ever known that there were 999 cases of heart attack in a time of 9999999999 seconds in the North Africa?
Dude 2:O RLY?

O RLY? by bactac May 22, 2006

O-Block

O-Block, previously known as WIIIC City, officially Parkway Garden Homes, is a low income housing project in northern Greater Grand Crossing. It is dominated by Black Disciple gang set 3Hunna, or 300. It is on MLK Jr. drive. The top of the street intersects 63rd street, who are bitter rivals of O-Block. Many famous figures such as Michelle Obama, Keith "Chief Keef" "Sosa" Farrelle Cozart, Dayvon "King Von" Dayquan Bennett, and many others come from here.

Student 1: Give me your lunch money nerd!

Student 2: I'm from O-Block bro you know we don't mess round there!

Student 1: Oh- I didn't know you was gangsta...

O-Block by ソサ// Sosa February 24, 2022

O Lawd 

A variation of "Oh Lord!". The spelling is based, phonetically, on a stereotypical southern African-American pronunciation. Rather like "O ma gawd".

Guy1: And then I totally hit dat shit.
Guy2: o lawd.

Grandpa: Back in my day, we used pine cones and tampons!
Impressionable Children: o lawd, here we go again.

KFC Clerk: May I take your ord-
Black Women: O LAWD GET ME A BUCKET O' CHICKEN.

O Lawd by Nick Hohoho June 14, 2008

O D 

O D means to overdose on something, to take an excessive amount of something.

Alyssa O D'd on dick so now she's mudded out.

O D by Miss Thickness December 30, 2005