Slicknob 

The phenomenon whereby if a gentleman masturbates just prior to (or during) bathing or showering, no matter how much soap or time he subsequently utilises cleansing the area, upon exiting the bath or shower the gentleman's bellend will be covered by a lip-gloss thin film of jism.

Aw man, I jerked it before I got in the shower, now I'm going to have slicknob all morning.

Slicknob by bobbieshaftoe April 4, 2011