This is funny why?
You wrote:
“This is funny why?”
Inversion. Humor is essentially based on cognitive and emotional paradox or on exaggeration of known truths.
To see Hitler, a despotic, mad mass murderer, rail against not being able to find a parking spot in Tel Aviv is...funny. It’s funny because it would (could) never happen, and takes a known truth (Hitler railed like the mad man he was), and applies that known truth to a silly situation.
I don’t know why they’re funny, but I’ve seen a few of them and they were all hilarious.