Just on a hunch, I googled 'Jonah Falcon' and 'Wikipedia.'
Et, voila ...
Jonah Falcon - Wikipedia, the free encyclopedia
Edit: Here are some interesting (I think) details from the entry:
Due to the massive amount of blood that is needed to achive a full erection, Falcon tends to lose consciousness before a full erection is obtained. Film star and porn pioneer John C. Holmes experienced this same problem. Falcon believes his penis is "perfectly formed", a claim more than one urologist has ascribed to, with a 15° curve downward after the first 6 inches (15 cm) -- Joey Arias had described it as "yam-shaped".
Obvious nonsense about Holmes, and I suppose about Mr. Falcon, who is nowhere near 13 inches long.
But the instrument
is yam shaped.