Definitions by CapnNorric

Backseatsman 

A creature who thrives in backseats of things, especially cars. He can get along just fine on the back of a bike, though.

A creature made up by The Lonely Island

Driver: There's something living in the backseat of my car!!

Passenger: It's just a backseatsman...

Backseatsman by CapnNorric July 13, 2010