Buy a set of 3 Pythagorean Cups from Ancient Greek.A Pythagorean cup (also known as a Pythagoras cup, a Greedy Cup or a Tantalus cup) is a form of drinking cup which forces its user to imbibe only in moderation. Credited to Pythagoras cup, it allows the user to fill the cup with wine up to a certain level. If the user fills the cup only to that level, the imbiber may enjoy a drink in peace. If the imbiber exhibits gluttony, however, the cup spills its entire contents out the bottom (onto the lap of the immodest drinker). These cups is absolutely functional The First Pythagorean cup has Height: 11cm(4,29in) and Diameter:9,5cm(3,7in) and it shows God Zeus the King of the gods, ruler of Mount Olympus, and god of the sky, weather, thunder, lightning, law, order, and justice. The Second Pythagorean cup has Height: 9,5cm(3,7in) and Diameter:8,5cm(3,31in) and it shows Pythagoras. The third Pythagorean cup has Height: 8cm(3,12) and Diameter:7,5cm(2,73in) and it shows God Dionysus the God of music, arts, knowledge, healing, plague, prophecy, poetry, manly beauty, and archery.