A young man spotted a very old man sitting on a park bench, sobbing his heart out.

"Can I help?" asked the young man.

The old man said, “It’s a lovely day to be out and about. I'm 95 today. I am rich. I have a big country mansion with servants who do everything for me. I have a superb new sports car, a private jet and a yacht. I have a gorgeous young wife who's organising my birthday party right this minute.”

"Blimey, sounds like you should be the happiest man alive! Why the tears?"

"I can't remember where my house is..."