In Greek mythology, Priapus (ancient Greek: Πρίαπος) was a minor rustic fertility god of purely phallic character, protector of livestock, fruit plants, gardens and male genitalia. (Roman equivalent: Mutinus Mutunus.)
He was a son of Aphrodite by Dionysus, Hermes, or Adonis.
One of the most famous images of Priapus is that from the House of the Vettii in Pompeii; it is a wall fresco in which Priapus is weighing his phallus against a bag full of money and it appears that his phallus is heavier.
At Helicon in Boeotia, the travel-writer Pausanias pointed out a statue of Priapus that was "worth seeing".
Sculptures of Priapus with large, erect genitalia were placed in gardens and fields to guarantee an abundant crop. For the Romans, his statue was used as a scarecrow and his erect penis was thought to frighten thieves. Epigrams collected in Priapeia (treated below) show Priapus using sodomy as a threat toward transgressors of the boundaries he protected like a herm: