When archaeologists excavated the ruins of Pompeii and Herculaneum, they discovered a profusion of ancient graffiti, much of it erotic, scribbled on various walls throughout the cities.

One such inscription records the relationship enjoyed by two men and reads simply: "Auctus fucked Quintius here."

We know nothing about either Auctus or Quintius, except for the pleasure they shared two thousand years ago.