Actually I'd like to know that one myself. I know the Ancient Sumerians had an orgy festival, which many historians regard the purpose of was to time the conception of that year's pregnancies. The Romans also had Lupercalia, which is regarded as the spiritual precursor to St. Valentine's Day. One of the practices during Lupercalia was for people to place Ostra with their name on them in a jar. Later there would be a raffle for the names in the jar and those who were so matched would hook up. Otherwise I would hypothesize that it doesn't vary by much. The first of the two primary biological imperatives is hardly diluted from civilization to civilization.
Edit: If this is about pottery then the Hellenics (Greeks, sort of, the word "Greek" hadn't been invented yet) had some pretty racy stuff. And, not just homoerotic, or nude games either. Below is a link to a Wikipedia image of one of better known ones.
Edit: If this is about pottery then the Hellenics (Greeks, sort of, the word "Greek" hadn't been invented yet) had some pretty racy stuff. And, not just homoerotic, or nude games either. Below is a link to a Wikipedia image of one of better known ones.
