It's when you are skinny dipping with some ladies in Lake Michigan and follow up by doing one of them in the ass. Then later that night you go and do the same thing with some of your closet gay friends.
by obwon420 March 24, 2009

“Hey Chad, let’s give those guys a double-Michigan”
Or
“Dennis fully blew a double-Michigan after dinner last night”
Or
“Dennis fully blew a double-Michigan after dinner last night”
by DayBed July 31, 2025
