When you both jump off of an airplane with a parachute and do it in midair.
37th base is almost impossible to attain, but it is possible for those determined.
by Adel7 November 29, 2007

5 Words Related to 37th base

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.