The phenomenon of pleasant things occurring by chance.
On my fifteenth birthday, many moons ago it must be said, I was walking home from school with my friend. We passed a post office and by chance I happened to spy a letter which had accidently become lodged in a postbox. Being 15 and a bit of a brat, I promptly retrieved the letter. I understand my morality is at issue here but I've had 15 years to deal with it lol.
Further down the road, I opened the letter. It was a birthday card. It said Happy Birthday Chalice (obviously it was my real name. It had a five pound note in it. I was drunk that night I can tell ya.
Anyone had similar experiences?