O

O is a letter. Commonly used in the word "Oh fuck". Also, THIS IS A LETTER WHY DID YOU SEARCH THIS UP

Mom: Were you watching porn?
Kid: Oh fuck
Mom: At least you're using the letter O!

by Cherrywastaken March 19, 2020

o horizon

When you are having an orgasm and nearly black out only seeing the horizon.

I fucked her so hard she had an O Horizon

by Whore-II-Culture November 17, 2017

o%

otay. It was invented to shorten the word otay, which is short for okay. o=oh %=tayy

Hand me that waffle, plz" "o%

by Zoie McZoerpants June 24, 2011

Neat-o

Very cool or very satisfactory , excellent

My mom's boyfriend is so neat-o.
Or in answer to a comment like..I got a car for Christmas...wow

Neat-o

by Queenmarcia December 23, 2021

O po!

(Widely used and originating from the Yoruba language of Nigeria by popular Musician Naira Marley,) and literally meaning "it's plenty" in English.
O po! is used to show amazement at the size, quantity, grandeur or beauty of something.

It's a very versatile slang that can be used anytime and in many situation.

E.G. (A girl with a big backside passes and a guy exclaims)
: This is huge, infact O po!

:This your Versace make sense oh, O po!

by Kikiolah January 7, 2020

O Bam A Car E!

When you type in "Obama Care" you'll get this definition. Coined by the popular late night host Stephen Colbert (whose main target audience used to be teens during this time; but now mostly parents like watching him) on The colbert report, circa 2010-2011.

Man: What do I need for my health care?
Health care advisor: O Bam A Car E!

by Thanks, obama. January 27, 2025

Goon-O

It’s the UNO card game we all know and love except the stakes involve a bukkake for the person with the most cards left in their deck

“Dude why are some of these UNO cards stuck together”
“Ew yeah UNO? This is more like GOON-O”
“Yeaaahhh that’s basically what happened last time we played…”

by Daddy's Patties September 24, 2025