This term is used after a man has masturbated, or after someone has given a handjob and has failed to wash his or her hands, resulting in the smell of dick.

The hand a male uses to masturbate himself with. Also, the hand a male uses to hold his member while inserting it into an orifice or other object.

To touch public surfaces after touching one's private areas, perhaps by utilizing the facilities, perhaps by self-pleasuring, perhaps by pleasuring someone else, without having the civil nature to wash one's hands first.