Is your cat alive or dead? You won’t know until you add a hot liquid.
The two mugs in this set look identical, but when you add hot liquids, one of the mugs slowly reveals a live cat, and the other, dead. But until you add the hot liquid, you don’t know which mug you have, and the cats can be simultaneously alive and dead, just like in Schrodinger’s thought experiment. No radioactive source or poison necessary.
I imagine that getting the dead cat mug wouldn’t be the best way to start your day.
Schrodinger’s Cat 10oz Mug Set of 2 ($19.99)