Marvin

Marvin, (slang): Term used to describe a visible erection by any individual in clown attire and clown industry standard facial makeup. Note; Said individual need not be a professional clown.
Useful when needing to address a clowns tumescent phalus in the presence of children.

"That's the last time we hire "Shakes the Clown", he had a visible Marvin the entire time."

by Lord AlaBastard April 09, 2016