Top Definition
Official Stay Up All Night And Game Night. Celebrated on December 23rd every year. Usually played on xbox. Game all night and sleep all day, then wake up just in time for Christmas Eve.
Dude I heard even some teachers are celebrating osuanagn this year, its gonna be beast.
by skooks.. December 23, 2011

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.

×