twentymoon 

A vacation one takes at age 29, as a honeymoon to celebrate and/or mourn the end of your twenties. Friends and significant others are encouraged to join your travels.

Similar to a babymoon or honeymoon, except no babies or marriage is required.

We’re taking a TwentyMoon to Europe this summer before my 30th birthday.

twentymoon by Mellen. June 13, 2018

Twentyonesome 

Surprisingly enough, when you have sex with 20 FUCKING OTHER PEOPLE.

Anyone who has a twentyonesome should get a medal for sluttiness.

Twentyonesome by GoldenBonnie09 May 29, 2019

Twentywonder 

Twenty(one)under / twennywonder

Referring to musicians but most commonly rappers who died at the age of 21 or under. The term is used when showing admiration or praising the likes of XXXTentacion, Lil Peep, Pop Smoke, Juice WRLD and Capital Steez .

Example 1:
Person: "Oh man, i really do love Pop Smoke"
Other person: "Yeah definitely, real twentywonder.

Example 2:
Person: "Man that new redveil shit is hard, hopefully he's not gonna be a twentywonder."

Twentywonder by bennyblanco7 April 7, 2023

Twentyman 

English surname originating around the War of the Roses. Possibly derived from Twinterman.

His last name is Twentyman.

Twentyman by o2o January 30, 2007

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