Used to claim this condition to impress pickups:Diphallic terata: a disease in which a man has two penises.

I read an article in my newspaper the other day about Freak Shows - both modern and of the time of Barnum and Bailey. There was a self-styled freak who worked for him who was born with three legs and (less well-known) two penises. Damned if I can remember his name but would this be an example of Diphallic terata?

Here is a URL about freaks that describes such a man. Not much detail though.

http://www.bizarremag.com/ask/freaks.html

Snakes' paired organs are called hemipenes.