"The ancient Greeks often painted sexual scenes on their ceramics, many of them famous for being some of the earliest depictions of same-sex relations and pederasty. Greek art often portrays sexual activity, but it is impossible to distinguish between what to them was illegal or immoral since the ancient Greeks did not have a concept of pornography. Their art simply reflects scenes from daily life, some more sexual than others. Carved phalli can be seen in places of worship such as the temple of Dionysus on Delos, while a common household item and protective charm was the herm, a statue consisting of a head on a square plinth with a prominent phallus on the front. The Greek male ideal had a small penis, an aesthetic the Romans later adopted. The Greeks also created the first well-known instance of lesbian eroticism in the West, with Sappho's Hymn to Aphrodite and other homoerotic works. Large phalli were considered undesirable for men to possess and often depicted for comic effect in ancient Rome.

There are numerous sexually explicit paintings and sculpture from the ruined Roman buildings in Pompeii and Herculaneum but the original purposes of the depictions can vary. On one hand, in the "Villa of the Mysteries", there is a ritual flagellation scene that is clearly associated with a religious cult and this image can be seen as having religious significance rather than sexual. On the other hand, graphic paintings in a brothel advertise sexual services in murals above each door. In Pompeii, phalli and testicles engraved in the side-walks were created to aid visitors in finding their way by pointing to the prostitution and entertainment district as well as general decoration. The Romans considered depictions of sex to be decoration in good taste, and indeed the pictures reflect the sexual mores and practices of their culture, as on the Warren Cup. Sex acts that were considered taboo (such as those that defiled the purity of the mouth) were depicted in baths for comic effect. Large phalli were often used near entryways, for the phallus was a good luck charm, and the carvings were common in homes. One of the first objects excavated when the complex was discovered was a marble statue showing the god Pan having sex with a goat, a detailed depiction of bestiality considered so obscene that it was not on public display until the year 2000 and remains in the Secret Museum." :Wikipedia.