Queen Elizabeth and Lady Di are out for a drive in the royal car on a Sunday
afternoon, and they slow down when they see a man by the roadside signaling for
help.  But no sooner has the car come to a stop than he springs to the door,
pulls out a gun, and orders them both out of the car.  "Queen Elizabeth," he
snarls, "hand over that snazzy diamond tiara you're always wearing."

"I'm terribly sorry, my good man," says the queen, "but I'm afraid I don't wear
it on Sundays."

"Aw, hell," says the guy.  "Well, listen, Di.  Hand over that fancy engagement
ring I keep seeing in all the pictures."

"I'm terribly sorry," says Lady Di sweetly, "but I'm afraid I didn't put it on
this morning.  It must still be on my night table."

"Aw, shit," growls the guy.  "I guess I'll just grab the car."  So off he
drives at the wheel of the Bentley, leaving the two women walking down the road
in the direction of London.  After a few minutes have passed, Lady Di asks the
queen, "Pardon my curiosity, Your Highness, but I'm quite sure you had that
tiara on this morning, didn't you?"

"Indeed I did," confesses the queen, blushing slightly and pointing.  "I hid
it... down there.  And you, Diana?  Weren't you wearing your ring?"

Yes, she had been, says Diana, turning beet red, and she had resorted to the
same hiding place.  They walk a few more steps in companionable silence when
Queen Elizabeth lets out a little sigh, "I do wish Princess Margaret had been
with us," she says.  "We could have saved the Bentley."