Top Definition
When two people bash their bare asses together for sexual pleasure. Basically making out with your ass cheaks.
Timmy: Meso horny.

Jimmy: Wanna do a Bavarian Butt Bash?

Timmy: Okay just take the dildo out of your ass this time.

by FannyFondler June 05, 2007

Free Daily Email

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

Emails are sent from We'll never spam you.