A trophy for the greediest person

This model has two purposes, the first one is to check if someone is greedy and the second is to award those who didn't pass the test with a trophy that will declare them as the greediest in the world. 

The trophy is shaped like a cup, or more precisely, a Pythagorean cup. The legend says that when Pythagoras had guests, he would give them his cup and they poured wine into the cup for themselves. If someone poured a reasonable amount of wine, nothing would happen. But when someone was greedy and tried to fill the whole cup, the whole cup got empty. 

So how does it work? The phenomenon that explains it is called hydrostatic pressure. The cup serves as a siphon. I added a photo of the 2D projection of the inner part of the trophy. When you add the water (or perhaps the wine or another beverage) the fluid flows through the hole so the height is equal on both sides. This is related to Pascal's law or a set of communicating vessels. I highly recommend reading about it for those who find it interesting. I added another photo that shows another type of Pythagorean cup which is similar and helps to understand how it works.

I uploaded an stl file and you can decide how you want to print it. I will recommend to print it in one piece, and if you want to make it smaller, don't make it too much small. If the hole is very small the water will have a hard time to move because the intermolecular forces (like hydrogen bonds)  with the plastic and between water molecules can slow down and even stop the flow.