Was telling the fb a (true) story from my youth when I had a weekend job directing traffic in car parks.
So we became friendly with some of the traffic wardens and one of them, Martin, was busy ticketing cars one afternoon when an old duffer came back to Martin waving the ticket that had been deposited on his car for being over time.
The old man tried to worm out of it but Martin was adamant - you were 20 mins later, sir. The old man got progressively upset before he actually used the old cliché, "We didn't fight the war so that Nazis like you could take over!"
Martin cut him down: "Sir, I find that remark highly offensive. My grandfather died at Auschwitz!"
The old man looked embarrassed, slunk back to his car and drove off.
As the car left the car park Martin shouted after him:
"Yeah, he fell off a watchtower, you PRICK!"
Genius.