The one thing you probably understand about quantum physics is actually a poor metaphor for the modern state of the field.
I have suggested before that the one thing “everyone knows” about quantum mechanics is that the quantum world is fuzzy and uncertain. Actually, there’s another thing, too. “Everyone” has heard of Schrödinger’s cat.
That’s why there are so many jokes about it. Schrödinger is driving along when he is pulled over by a policeman. The officer looks the car over and asks Schrödinger if he has anything in the boot.
“A cat,” Schrödinger replies.
The policeman opens the boot and yells, “Hey! This cat is dead!”
Schrödinger replies angrily, “Well, he is now.”
As physics jokes go, it’s not so bad. At the least, it illustrates what a good job Schrödinger did in finding an image catchy enough to become a cultural meme.