1. The number between 20 and 22.
2. The age that you are legally allowed to drink and go into bars and nightclubs.
3. The sum of 9+10, according to a dumbass overplayed video on a popular mobile app called Vine, which lets people create quick 5-7 second videos and post them. The video goes like this.
Teenager: you stupid
5 year old boy: no I'm not.
Teenager: what's 9+10?
5 year old boy: ... 21?
Teenager: you stupid.
The original video has been made fun of all over the internet. People do remakes of it, have added the little boy saying "21" into popular videos, and have created songs about it, usually taking the beat of Bobby Shmurda's "Hot Nigga". It was on the news that the kid ran away from home, because he was sick of being made fun of.
2. The age that you are legally allowed to drink and go into bars and nightclubs.
3. The sum of 9+10, according to a dumbass overplayed video on a popular mobile app called Vine, which lets people create quick 5-7 second videos and post them. The video goes like this.
Teenager: you stupid
5 year old boy: no I'm not.
Teenager: what's 9+10?
5 year old boy: ... 21?
Teenager: you stupid.
The original video has been made fun of all over the internet. People do remakes of it, have added the little boy saying "21" into popular videos, and have created songs about it, usually taking the beat of Bobby Shmurda's "Hot Nigga". It was on the news that the kid ran away from home, because he was sick of being made fun of.
by delilahmonique December 7, 2014
by Deenz December 14, 2005
21 can be used to insult people by using the fact that they only have 21 pairs of chromosomes. (the normal amount is 23 and any difference from 23 will make them deformed)
by Panik1209 February 14, 2011
The sum of the numbers 9 and 10, this is also the legal drinking age for the United States of America. At the age of 21, you can drink and drive in the U.S., although this isn't recommended in the U.S. as it is highly illegal. This number is a great number to use on your fake I.D. for the age you are.
by Pedro K. Hasseem December 6, 2017
by Licc December 28, 2021
Person 1:"21"
Person 2 looks at Person 1, proceeds to punch Person 1.
Person 1:"Hey, hey, what's 9+10?"
Person 2 looks at Person 1, proceeds to punch Person 1.
Person 1:"Hey, hey, what's 9+10?"
by Dickosaurus May 4, 2016
by Moses jumppiece October 9, 2006