Kylix

A kylix is a type of wine-drinking cup with a broad relatively shallow body raised on a stem from a foot and usually with two horizontal handles disposed symmetrically. The almost flat interior circle on the interior base of the cup, called the tondo, was the primary surface for painted decoration in the black-figure or red-figure styles of the 6th and 5th century BC. As the representations would be covered with wine, the scenes would only be revealed in stages as the wine was drained. They were often designed with this in mind, with scenes created so that they would surprise or titillate the drinker as they were revealed.
Because the primary use for the kylix was at a symposium - a "drinking party", or symposion in Greek -, they are often decorated with scenes of a humorous, light-hearted, or sexual nature that would only become visible when the cup was drained. Dionysos, the god of wine, and his satyrs or related komastic scenes, are common subjects. Scenes of heterosexual or pederastic love, sex or orgies are also often depicted. The shape of the kylix enabled the drinker to drink whilst recumbent, as was the case in the symposia.