18 

approximately the amount of time it takes to chug the ocean

man i can't believe badlands chugged the ocean in 18 seconds the world record is 19

18 by BIRB November 9, 2020

18 

Flinch's true lover, and Etherealprince's cousin, she actually has no legs.

"Haha, you're touching my bum, you 18!"

18 by GORTEX November 10, 2003

18 

18=Old

Oskar 18 (Balding): Hello young whippersnapper!
Karl 17: Go away old man! You are desgustang and should live in a retirement home.

18 by xXx1337🍅360xXx June 12, 2019

18 

18=old

Oskar 18 (Balding): Hello young whippersnapper!
Karl 17: Go away old man! You are desgustang, and should go to a retirementhome.

18 by xXx1337🍅360xXx June 12, 2019

18 

A neo-nazi code and dog whistle. 1 and 8 refer to the 1st and 8th letters "A+H" of the alphabet, forming an acronym for "Adolf Hitler".

"What's your instagram username?"

"JonAdams18. 18, because I was born on the 18th of July 1996."

"You should be careful with that 18 right there, people might get the impression that you could be a neonazi."

18 by thatonegoddamnguy August 4, 2019

18 

The age when you can finally get the hell out of your cage

Me: dude I can't wait to turn 18 and move out of this hell hole

18 by Spacex December 12, 2020

18 

The age where you are no longer a dumb child and can be referred to as human

Wow that dumb child is 18 now! I can finally respect them

18 by God of bepis June 15, 2021