My usual reply would be that it's Schrödinger's pizza, that is every type of pizza at the same time, and it exists in all states at once until you open the oven to observe it, at which point the waveform collapses into one kind of pizza.What am I watching
But upon further inspection, it appears to be a single pizza in various stages of being baked, so now I'm stumped.
And now for something completely different.