21

9 + 10
Obviously

Fool: You stupid

Genius: No I'm not

Fool: What's 9 + 10?

Genius: 21

Fool: You stupid

by LKing100 October 18, 2014

21

The sum of 9 + 10.

"What's nine plus ten?"
"21!"
"You stupid!"

by patg_ October 28, 2014

21

The kid who says 9+10=21

You stupid. No I not. What's 9+10. 21

by 21 kid November 18, 2014

21

The magical age where it is legally ok to get incredibly drunk. At this time, a young adult spends most of his free time consuming vast amounts of alcohol in a variety of forms, saying that they're "making up for lost years."

by Fatass February 13, 2003

21

The age at which people start asking YOU to go to liquor store instead of vise versa

I just turned 21 and everyone has been asking me to go to the liquor store

by Lonestar7474 June 1, 2009

21

The answer to 9+10

Man:You stupid

Kid:No I'm not

Man:What's 9+10

Kid:21

by Mr bright side October 26, 2014

21

1. Age at which a person in the United States can drink liquor legally.
2. The day of the month when apocalypses are known to occur.

1. The 21st birthday is special. You can now enter bars and drink.
2. May 21, 2011, October 21, 2011, December 21, 2012. Need I say more?

by Zephyius May 23, 2011