twentyone 

noun: a telephone call; verb trans: to give someone a phone call. From police code 10-21, originally meaning request for contact by phone.

1. Yo son gimme a twentyone.
2. I'ma twentyone y'all later.

twentyone by Grandmaster Vinny B November 14, 2005

twenty one pilots

for those who cry on the inside but dance on the outside

"did you hear that new twenty one pilots song?"
"yeah I cried, I mean danced to it last nite"

twenty one pilots by kyl0R3n May 30, 2016

Twenty one pilots

The best band ever that was on hiatus for about a year. But they are back now with a new album Trench.

Twenty one pilots is the best band ever ||-//

Twenty one pilots by Janyse October 11, 2018

Twenty One Pilots

Two guys from central Ohio, Tyler Joseph and Josh Dun, that make some of the most amazing music that will ever grace your ear drums. They don't want to be heard, they want to be listened to. If you're looking for a crazy, high evolvement concert with plenty of sweat to go around and crowd surfing galore, by all means, go to their next show!

From their website:
"Basically, we are all responsible for the preservation of our personal joy; but happiness is different. Joy is not circumstantial, happiness is. You can be depressed and still have joy. You can be suicidal and still have joy. We all stop thinking and we all stop talking and we all stop sharing and we all stop creating, because by doing any of these things we quickly find out just how unhappy we are. But that's ok. That's normal. Don't let the fear of unhappiness cripple your pursuit of finding what it is you believe. Since joy is found in belief, we all have to push through unhappiness to find joy. Basically."

Check them out at twentyonepilots.com

Human #1: Did you guys go to the Twenty One Pilots Show on November 19, 2011?
Human #2: YEAH! THEY SOLD OUT THE WHOLE NEWPORT MUSIC HALL!

Human #3: My shirt is still wet from everyones sweat.

Twenty One Pilots by SarahTurvy November 20, 2011

twentysome 

sexual intercorse involving 20 participants
aka an orgy

some of the football team and the cheer squad got together for a twentysome

twentysome by so!id December 20, 2008

Twenty One Pilots

A band containing two people that make music with happy melodies yet emo, heartbreaking lyrics. Do not fit to any genre of music, and will have you sitting on a rainbow for one song and riding through the fiery depths of hell on a tricycle in the next. A name that can and will never be spelled with the number 21. A fandom in which everyone refers to lead singer Tyler Joseph as a "smol bean" and drummer Josh Dun as a "cinnamon roll".

"You should listen to Twenty One Pilots!"
"Oh, what genre is it?"
"I'm gonna go."

Twenty One Pilots by emodemon February 29, 2016

Twenty One Pilots

Twenty One Pilots are just two local beans just trying to stay low, and stay alive. Tyler Joseph, the singer is the big bean, he's known for screaming instead of singing. Josh Dun is the baby bean and he is known for back flips and coffee

A: Twenty One Pilots is a nice band
B; Yeah, Josh doesn't get enough credit though

Twenty One Pilots by alaskatheglitch October 7, 2016