Top Definition
A runner's challenge in which the athlete must run 21 miles and drink 21 beers within the 24 hours that constitute his or her 21st birthday.
Alex tried to do a 21/21/21 for his birthday but got overzealous and passed out by noon.
by keykeys December 18, 2008
5 Words related to 21/21/21

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×