Mass Man 

Danny Masstett or mildy retarded kid who plays too much Legends of Zelda and names their dog "Kitty"

The Mass Man rode by on his bike again...what a dork!

Mass Man by Kate Kedvesh May 7, 2004

Man Mass 

The size of your penis. Generally man mass is used to describe an above average sized cock.

Blake - "I have man mass!"

Garrett - "If I was black, my man mass would only be slightly above average"

Man Mass by lolZharharhar July 4, 2011

Massman 

Massman is a guy from mass that lives in ct but doesnt know he is from mass. He gets a little coopy from time to time and never takes off his jacket. Sometimes he likes to be called Massie or pepper head.

Massman got so crazy yesterday he had feathers flying from his coop.

Massman by friknfrak December 8, 2012