Definitions by Failure to Launch

simon 

A leader among men who has the unafformentioned ability to fail at launching. This person has multiple erections yet fails to ejaculate when predisposed to sexual fantasies and proprioception from sensual sources. This person is a descendent of a fish face and has yet to experience the ultimate satisfaction and blasting onto a person's face

Yo dont be a simon, that dudes a failure
Yo last a little longer, stop being a Simon.

simon by Failure to Launch April 16, 2007