About 15 years ago , one frosty morning, I set off to go and clean some windows. Running late, I never cleared the windscreen properly (I see the irony there), frosty windscreen + low sun = can't see where you are going. I managed to clip the mirror or a parked Astra, being about 5:30 - 6:00 there was no one about so I could have drove on. Instead I wrote my details on a scrap of paper and left it under the window wiper.
I ended up fixing the mirror myself and got speaking to the owner, Barrie. He is now one of my best friends.
And we all lived happily ever after.
Moral of the story is - try not to be a c word.