V. Jerk off, beat off, the knuckle shuffle, masturbation. The motion used to pantomime masturbation is strangely close to the motion used to pack a Civil War style musket.
Slang: This procedure is preformed by a doctor when he or she needs to take a bacterial swab at the base of the penis.
Similar to that of a black powder musket, it involves the insertion of a long cotton tip swab into a half errcet penis to obtain samples from the inner base of the penis to conduct a bacterial test for sexually transmitted diseases such as Gonorrhea.