Bieb Deceived

The equivalent of a Rick Roll on YouTube, but with a Justin Bieber video, instead of Rick Astley.

Can also happen on torrent when you think you are downloading a James Bond movie called "Never Say Never" and then find out it's a Justin Bieber movie.

Not again! I clicked on this video for the iPad 2 preview, and I was Bieb Deceived!

Bieb Deceived by Vapor S. Thompson March 14, 2011

4th December the gay day

Be as gay as you want with any boy without saying no homo. It is not gay. You can even touch tips

Callum: Can I slip my dick in your ass.
James: no I'm not gay
Callum: it's the 4th December the gay day so it's not gay
James: oh ok stick if in as far as you want

4th December the gay day by England_sex December 3, 2020

December 1 

This is the day to send a nude to your fellow soldier that has just completed No Nut November. This is the first time your soldier will have nutted in a whole month so make sure you have the most prime picture possible.

Dude! I can’t wait until December 1st because that’s when I can finally bust!

December 1 by Jimmony Crickets May 28, 2020

the upper decker 

the act of deficating in the upper tank of ones toilet leaving a foul stench undiscovered with the remnants of muddy water

before i got kicked out of that bar last night i gave them the upper decker

the upper decker by face vol.4 May 23, 2009

December 6 

national tell your best friend you love them day

the day that didnt have a definition until i made one :(

me: hey best friend i love you!
best friend: i love you too, why are you saying it tho
me: because its december 6th!

December 6 by yeetthatfeetus November 10, 2019

Deceit 

Deceit Sanders (real name unknown) represents Thomas Sanders', well, deceit on the web series Sanders Sides.

"Deceit's a slimy boi, Logan! A slimy boi!"

"To the best of my knowledge, he does not excrete slime."

---

"Deceit. Real classy of you to sneak up on a Side in the middle of house-keeping."

Deceit by Deceit Sanders August 13, 2019

December 19 1999

UrbanDictionary's birthday

"o.g" and "player " were posted by the user bob and alpha mu, on December 19 1999, making them the first UrbanDictionary entries. (I'm counting that as UrbanDictionary's birthday)

December 19 1999 by cinimodde November 28, 2017