The first thing which comes into my mind – A must do prank ! 😛
A Pythagorean Cup OR a Greedy Cup is a form of a drinking cup which forces its user to consume less alcohol. It allows the user to fill the cup with wine, alcohol or any other liquid up to a certain level. If the user fills only up to this level, one can enjoy his drink in peace.
But if adds more of it by filling it more than the certain limit , the cup spills its entire content out of the bottom (onto the lap of a greedy drinker). more “Pythagorean Cup – The clever mischievous cup !”