Pythagoras Cup

This unique item is a cup or mug that is not made for drinking but, rather, is intended to be a puzzle or perhaps a practical joke.

When it is filled beyond a certain point, a siphoning effect causes the cup to drain its entire contents through the base, making a mess. The cup has been used to make statements about greed. As long as it is not overfilled, it acts like a normal cup. If overfilled, however, the fluid communicates with a separate column and, through the “siphon effect,” has the consequence of draining the cup.