O.S.B.T

O.S.B.T is an abbreviation for the phrase "One shot begone thot". This term is used to describe a videogame player, most likely a Fortnite player who only needs one sniper shot to kill all his enemies. This is often used to describe "xd" clan members.

"Jay/Mason/Daniel, can you split your heavy ammo, I've only got one bullet.
"Nah"
"C'mon Jay/Mason/Danie I'm not an O.S.B.T like you

by xd gang is what its all about August 19, 2018

O's Up

The international symbol for the best long-term Israel program known as OTZMA. Introduced in 2009, this stance, which is very similar in style to the fifth arm position in ballet, serves as a calling card for OTZMA alumni and current participants.

"O's up!"
"It's been three years, but I still got my O up!"

by sarmcohe June 27, 2013

O.S.G.W.S

an acronym meaning on some grown woman shit. Used best when textin

Girl 1: Ay, girl! Im tryna go to da movies later on. Make sure you ask your parents can you go out.

Girl 2: Girl, please! What I need to ask them for? Im O.S.G.W.S

by KC_Redbone February 25, 2008

O.S.P.

An older guy that likes young girls. An 'old school pervert'

Did you hear that Stromer hired that hot 18 year old, even though she was really dumb and un-qualified?
"Oh yeah, I knew he would. He's totally an O.S.P."

by Y-Ganger May 13, 2008

O.S.S.M

Old School Scary Movie(s)

O.S.S.M'S are way better then the scary movies that we have.

by y.cole March 28, 2012

O.S.I.B

Over sensitive ignorant bitch
To be ignorant and and have shitty insults and get insulted by every little thing that isn't even that offensive
To not know any shit and become a bitch because of it

Emo Johnny: hey i hate my life your hair is messy tom
Happy tom: Stop pmsing your not emo omg ur so mean my hair isnt messy im gonna be a douche bag about it
Emo Johnny: stop being a O.S.I.B or stop O.S.I.Bing

by Rex Rodrigaz June 15, 2016

O.S.D.D.

Similar to D.I.D. (Dissociative Identity Disorder), often confused, but different.
Usually lacks something, for example amnesia or clear personality differentiation.

Person 1: I thought our system had Dissociative Identity Disorder, but we realized we didn't have amnesia.

Person 2: You probably have O.S.D.D. 1b.

Person 1: Oh, yeah!

by TanyaLeBean September 26, 2021