Schrödinger's Cat
You open the box, and:
It's a cat.
A cat jumps out of the box.
35 minutes until another cat goes in the box
Schrödinger's Cat is, um, because of the quantum superposition or dual waveform states, the cat is in the box, and if you look at it, it's because of, you know, atoms.
Ah hell I dunno. All I know is that I keep throwing cats into the box and they come out or don't. Well actually I mean they always come out, it more depends on whether you'd want to have them anymore when they do.