Let's go back to Greece.
Fresco of Priapus, Casa dei Vettii, Pompeii. Depicted weighing his enormous erect penis against a bag of gold. Unlike the Greeks, Ancient Romans admired the large penis of Priapus, although they had a sense of humor about it.
We even have phallic saints catholic mythology.
were actual saints or local deities who were invoked for fertility. More than vulgar representations of the phallus, phallic saints were benevolent symbols of prolificacy and reproductive fruitfulness, and objects of reverence and especial worship among barren women and young girls. Many were legitimate saints who acquired their priapic attributes through the process of folk-etymology. Sir William Hamilton (1730-1803) reported that, among the wax representations of body parts then presented as offerings to Cosmas and Damian at Isernia, near Naples, on their feast day, those of the penis were the most common. Hamiliton's observations led Richard Payne Knight to write his Account of the Remains of the Worship of Priapus, in which he reproduced examples of the effigies.
Some examples include:
Ters, or St. Ters, of Antwerp, whose cult was reported on by Johannes Goropius Becanus. He was also named Semini or God Jumenas.
Saints Cosmas and Damian, twin physicians, one of whose cult-centers was Isernia, in Italy.
Saint Guignolé (Winwaloe), first Abbot of Landévennec, who acquired his priapic status by confusion of his name with gignere (Fr. engendrer, "to beget"). His shrine was not destroyed until 1793.
Saint Foutin, by assimilation of the name of Pothin (Pothinus), first bishop of Lyon, to the verb foutre (“to fuck”). People worshipped the phallus of St. Foutin by pouring wine on it.
Saint Guerlichon (Greluchon) at Bourg-Dieu.
Saint Giles (Aegidius) at Cotentin.
Saint Rene in Anjou (by confusion with reins, "kidneys" - once believed to be the seat of sexual power).
And phallus in churches.
Church of Saint Radegonde, France
Thorpe Arnold, England