Top Definition
The Michigan Monster Mash happens once a year on Halloween night. It is a event where many people at a Halloween party get together in costumes and have a mass orgy. The best part of the Michigan Monster Mash is that everyone is in a costumes and no one knows who is who. So next Halloween go to a local part and do the mash ;)
The Michigan Monster Mash happened in Ann Arbor Michigan on Halloween night in 1999, and has happened ever year since.
#michigan #monster mash #monster #mash #halloween #orgy
by DR124 September 18, 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.

×