A joke that is a very bad joke to everyone except you and your ex, so you have no one to enjoy it with :(
by •Anony mouse• February 22, 2020

A specific type of joke where you name a part from a very specific model/year of car as part of a sex joke.
'I can't bust a nut without a poster of 2001 Toyata Corolla wrapped around my head'
'Well, I can't orgasm without a windshield wipe of a 1998 Bentley Arnage up my ass.'
'Those are Car Insid-'er Jokes'
'Well, I can't orgasm without a windshield wipe of a 1998 Bentley Arnage up my ass.'
'Those are Car Insid-'er Jokes'
by The Final Girl Support Group July 19, 2021

What Urban Dictionary claims to do, but really if you just search a name you find a bunch of praise for friends and partners.
Urban Dictionary: "Don't name your friends. We'll be rejecting inside jokes and names of non-celebrities."
Me: "But didn't I just see a bunch of non celebrity naming?"
Me: "But didn't I just see a bunch of non celebrity naming?"
by ropoopy May 22, 2022

Sophie: Ashley what's wrong?
Ashley: Oh i just tried to publish an inside joke on urban dictionary and it got rejected
Sophie: Oh that's terrible
Ashley: Oh i just tried to publish an inside joke on urban dictionary and it got rejected
Sophie: Oh that's terrible
by koolcatSophiefan September 4, 2019

A joke pertaining to a friend group or online community, through which it is exchanged exclusively. Similar to memes, but more specific to a smaller, more clearly-defined group of people.
friend 1: "Guess it's time for you to go get your own boat, then!"
friend 2: "Ha! You smartass, you!"
stranger: "Uh... was that a joke or something...?"
friend 2: "Oh, it's just a silly little inside joke. Don't sweat it."
friend 2: "Ha! You smartass, you!"
stranger: "Uh... was that a joke or something...?"
friend 2: "Oh, it's just a silly little inside joke. Don't sweat it."
by Inlovewithabsol July 26, 2023

The thing that Urban Dictionary hates and will not let you publish a definition if it includes an inside joke
by nabrU yranoitciD January 13, 2020

Thom: Dirty Drumsticks!
Steve: Damnit, who let Thom in on the joke?
Kevin: Probably Billy; It won't be long until he forces it into an inside out joke.
Steve: Damnit, who let Thom in on the joke?
Kevin: Probably Billy; It won't be long until he forces it into an inside out joke.
by NotJakeSV May 24, 2011
