Priapus, a minor fertility god with a major permanently erect penis, from whom the medical term priapism derives.

Source: Fresco in Casa dei Vettii, Pompeii. Credit: Wikipedia Commons

Malinowski wrote of the Legend of Inuvayla'u, who was the head of his clan and possessed of a remarkably long organ. When the women of the tribe were cleaning the ground or weeding he would stand behind a fence and push his penis through a convenient aperture. It would wriggle along the ground like a snake, and when the women went bathing the penis would chase them through the water like an eel. Eventually he left the village, before he went cutting off his penis and testicles: they turned to stone as they fell. The testicles can still be seen, as large round boulders; and the glans penis is a pointed helmet-shaped piece of coral.

In the "Arabian Nights" many vast organs are paraded. In one of the stories there is a description of a zabb, "as great as an ass's or an elephant's, a powerful sight to see." In another of the stories a man is able to wish for a large penis, whereupon the zabb grew enormously until it resembled a calabash lying between two pumpkins. The weight was so great that the poor fellow could no longer stand.

And at a more mundane level we have the straightforward exaggerations common in pornographic fiction of all ages. In de Sade's "The 120 Days of Sodom" Hercule boasts a 13 in. long penis. In Chinese fiction there are similarly impressive items of equipment, with organs invariably described as of "incredible length," "bigger than a sea cucumber" or "too thick to be encircled by a lady's fingers." The hardness of such monsters was comparable to that of an iron post, and such organs could support, when erect, a bushel of wheat hung from the end!