Fluffer

On a pornographic film set, a fluffer is a person hired to keep the performers' penises arousing and ready for the camera to roll. They can accomplish this physically by stimulating the actor orally, manually, or without ever touching them.

More About Fluffer

Whether the existence of fluffers is a true urban legend of the adult film industry or not is up for dispute. According to a number of celebrities involved in pornographic films, there isn't a job like that on set. It is possible to attribute the persistence of the myth of the fluffer to society's acceptance that pornography depicts a world in which sexual activity is ubiquitous, of which the fluffer is but one aspect.