A fork of Rural Dictionary
From Scottish Origins, A Dirty Munro commonly takes place on either a croquet field or a golf course.
A male will proceed to perch himself ontop of a bench followed by a small leap into the air, using gravity to aid the insertion of a full golf club/croquet racket deep inside the colon. Once inserted he will wait for the next group of players to tee off and use him as a putter/racquet.
"That was a spectacular round today, even landed that putt with the Dirty Munro on the 14th"