A slang term meaning alright or satisfactory. Can be shortened to "O.K." or "Ok".

Slang term for a shock site that features a young woman with an octopus in her vagina.

A line from the Japanese manga/anime series "Fist of the North Star" that translates to "You're already dead". Said when victory is imminent.

A dismissive response to a Baby Boomer who has likely said something insensitive or ignorant.

Reminiscent of the dark, fictional work of writer George Orwell. Often used in reference to his dystopian account of a future totalitarian state in Nineteen Eighty-Four.

OxyContin (or oxycodone), painkiller

Oh Yeah

On Your Bike

Listen up

Oh Your God

Open your mouth, solve your problem

On Your Own

Australia

Confused

28 grams of drugs (usually marijuana)

Official Use Only

Oh, You Shut Up

Out Of

Original Video Animation

Or Very Near Offer

Obviously

Oh Well

Or Words To That Effect

Often Works For Me

Other World Kingdom

Crouching and staring like an owl

Beat, dominate (gaming)

Dominated

Oh Well, Never Mind

One Way Or Another

Occupy Wall Street

Anything

Or Words To That Effect

Sharp blade

One Thing Led To Another

Off the top of my head

Other Than Mexicans

Most usages of "OTN" on the Internet these days are of Japanese origin and refer by sound-alike to the Japanese slang terms "ochin" (child's testicles) and (especially) "ochinchin" (child's penis). The term is especialy used in the phrase "gigantic OTN" meaning that a boy has a very large penis for a person of his age. As of mid-2015, the term OTN is popular primarily because of the song "Gigantic OTN" (look it up on YouTube).

One Time Only

On The Other Hand

On The Other Other Hand

One True Pairing - a strong preference for two fictional characters to be portrayed together, romantically or otherwise.

On the road

On the scene

Over The Top

On The Third Hand

Off The Top Of My Head

Off The Top Of My Head And Rolling Out Of Bounds

Off To Work

Over To You

Open University

Once Upon A Time

Interjection said when experiencing pain

Ought to

Obsessive fan

Over the air OK

Owing To A Slight Oversight In Construction

Okay

Off The boat

Over Taken By Event

Over the Counter

Off the Derech (Way in Hebrew) - someone who is no longer observing Orthodox Judaism

Over the edge

Its a gang or squads for like field butt it means off the forum

On the Floor Laughing

On the floor laughing my ass off

Open The Fucking Manual

On the ground

On The Gripping Hand

On the ground laughing

Off The Hook

On The Job

Over The Knee

Out to Lunch

Oh Really

Google's social network

Oh Really Now

Expression of confusion

Frustration, despair

operating system

One Size Fits All

Oh Shit, I Forgot

Oh Shoot It's Monday

Oh Shit I Never Thought Of That

Or Something Like That

Awesome

Other Significant Other

Open Source Software

Awesome

On Second Thought

Off Topic

On The One Hand

One True Threesome

over the air

Obligatory On Topic Comment

"OOTD" stands for "Outfit of the Day." It's a popular acronym used to describe and showcase one's daily fashion choice.

Out Of The Office

Out Of The Question

Out Of This World

Out of your fucking mind

Out Of Your League

Out Of Your Mind

An acronym for "Original Poster". Common used in message boards to refer to the initial creator of a forum.

Greek exclamation

Other People's Business

Other People's Kids

Other People's Money

A snitch

Older brother, male friend

A opp is a snitch or person you cant trust there like police but not a police officier.

Operations Security

Black on the outside, white on the inside

An event in which many people have sexual intercourse to varying degrees.

Alright, hello

Out of control

Out Of Endurance

A slang response to defeat or frustration. From the online game Roblox, which has a character death sound effect of a child-like voice saying the word.

Sound made when impressed by something

On one hand

Out Of Interest

Out Of Luck

Out Of Mana

One Of My Friends/Followers

Out Of My League

Out Of My Mind

Out Of My Price Range

Out Of Office

Out Of Place

Word said after doing something wrong

Out Of Stock

Out Of Sight Out Of Mind

Out Of Sight, Out Of Mind

Out Of Touch

Out of the Box

Happened Once

Ounce of a drug

Online

Oh, Never Mind

Oh No, Not Again

Oh No, Not This Again

Or Near Offer

On the Other Hand

Oh No

One Night Stand

Oh No They Didn't

On the floor laughing my ass off

Oh No You Didn't

Oh no you didn't

A slang logograph that is used to represent two very wide eyes, often used to express surprise or shock.

Option Open to You

Out Of Ammo

Object Oriented Analysis and Design

One Of A Kind

Out Of Body Experience

Oh My Dayz

Oh My Flying Spaghetti Monster

Other Music For Uplifting Gormandizers

Oh My God

Oh My Giddy Aunt

Oh My God Dude

Oh My Gosh, Not Again

Oh My Gosh

Oh My Jesus Christ

Oh My Legs

Oh My Science

Oh My Sweet Jesus!

One More Thing

On My Way

On My Way Home

Oh My Zeus

Drunk, high

Under the influence of drugs

Or Nearest Cash Offer

One Love, goodbye

OK What-Ever

old lady

a woman that was once a lovely young women that is now a lovely old woman

Long established member of an online community

Organic Light-Emitting Diode

One Line Followup

OnLine Love

One Less Lonely Girl

OnLine Netiquette

Only Losers Obey Yolo

One Laptop per Child

One Life to Live

Old Man

Sound of eating

Oh My Allah

Oh, my aching ass

One Man Army Corps

On My Break

Oh My Days

Over My Dead Body

On His Way

Hey

Oh, I'm back

Oh, I see

Oh, I see now

Oh, I See You Ate One Too

Oh, I see you are empty

Unpleasant, unpopular person

Oh I see

Orange Is The New Black - A popular television series about a women's prison with multiple story lines and in it's second season

Hey

Only Joking

Obsessive Jonas (Brothers) Disorder

On Job Training

A slang abbreviation of "okay", meaning alright or satisfactory.

OKay, Bye Bye

Oklahoma City

OK

Okey Dokey, OK

Okay

Overwhelming Feelings of Concern

One Finger Salute

Odd Future Wolf Gang Kill Them All (rappers)

Oh God It's Monday

Only God Knows

Only God Knows That

Online Gaming Network

One good turn deserves another

Other Half

Own House And Car

Oh, Hi

Old Habits Die Hard

Oh my gosh

Oh Hell, It's Monday

Oh,Ok

One Hit Knock Out

Oh Hell, No!

One Hand On The Keys, One Hand On The Crotch

Operator Head Space

One Handed Typing

Oh, Come On

Optical Character Recognition

On Company Time

Oh Dear

One Day At A Time

Own Damn Fault

Oh Dear God

Oh Dear Lord

Orbital Drop Shock Trooper (Gaming)

On Dis Ting

One Damn Thing After Another

Oxford English Dictionary

Original Equipment Manufacurer

Old Fart

Offensive term for a white person

Of course

Oh, For God's Sake

Old Folks' Home

it means oh what a fricken loonatic

Old Freaking News

Gynecologist (OBstetrics and GYNecology)

One Big Happy Weasely Family

Okay, bye bye

or best offer

Oh, Be Quiet

Obviously

Oh, by the way

Oh by the way I adore you

OBligatory The World Is A Very Big Place

Obviously

Obviously

Obviously

Obviously

Obviously

Old Battle Axe

Own Character

Obsessive Compulsive Disorder

Oh (Scottish)

Of Course I Am

Of Course Not

A slang text emote that can appear as a number of things, depending on which O are capitalized. Can be either a blank stare, confusion, or surprise and shock.

High five

Out of print

Salute

Innocent, angelic

Innocent, angelic

Over acting

Usually used as an abbreviation for "on another note"

Over And Out

One And Only One

Old Age Pensioner

On a roll

On a site right now

On A Totally Unrelated Subject

On An Unrelated Subject

Oh brother

Good game

Overcome By Events

Object Exchange

High five

Ounce (of drugs)

Over and Out

Clown nose smiley face

An slang emoticon used to display shock or surprise. Looks like a pair of large, blank eyes with a small mouth in between.

Oh Really