A term for masturbation. A reference to the Californication character, Charlie Rumkle, who was terminated from his place of employment for masturbating at his desk. A lot.
Verb: the act of masturbating to Internet porn at one's desk in the workplace.
Noun: The term used to describe masturbating to Internet porn at one's desk in the workplace.
Verb Use: "Go ahead, I'll join you after I knock off a quick rumkle."
Noun Use: "Werner will join us in a few minutes. He's squeezing in a quick rumkle back at the office first."