O.T. 

a reffrence to the female and male sex parts

Boy: Wanna use our O.T.'s tonight

O.T. by LIL PENE February 20, 2018

O.T. 

1. Short for Oil Tanker: which refers to a large broad
2. An overweight female
3. A Heffer

Friend 1: Yo man, check out that girl over there.
Friend 2: Who? That hottie?
Friend 1: No, the O.T. beside her, she'd be perfect for you, HAHA!

O.T. by Tyler O'Neill October 17, 2007

O.T. 

An elderly person: Old Timer.

Social Security is for O.T.s!

O.T. by Pitseleh January 23, 2008

O.T. 

Operations troll, or, alternatively, Operations torture.

An event that interrupts a human's natural order of operations. "Operations torture" would imply amplitude, frequency, persistence of the torturer, or perhaps cunning, premeditation, and/or dramatic irony that the fucked-up-ness of the situation is known to potentially many MANY people.

This like car problem is like a huge O.T., huge O.T. Huge O.T. <--- probably 0-10: 10.0 huge O.T.

If somebody does it on purpose, they're going to hell

If somebody does it intentionally, with amplitude, frequency, persistence, perhaps cunning, premeditation, regardless of dramatic irony, the apathy of the audience might be taken into account

O.T. by realzealrachelb July 28, 2016

o.t. 

a teen being home alone

“yeah i’m gonna be o.t. tonight my parents gotta work”

o.t. by Jaytified April 29, 2020

O.T. 

Off topic

*Texting
BFF: Yeah so me and my bf broke up.
Me: O.T. My uh little brother died just now, but back to you. What happened?

O.T. by Lileighfer March 31, 2021

O/T 

Used on forums to show if a thread is off topic (O/T) from the forums main theme.

This thread has nothing to do with what this forum is about noob, it's O/T.

O/T by urinebleech September 28, 2008