Getting back on topic....
Back in the early 90's me and two mates were returning from a 4 month stay in smalltown Czechoslovakia. It had ended rather sourly with us us getting frogmarched off the bus back to London by the polis (who had guns), put in the jail overnite and relieved of all our money all because of some C.U.N.T. who managed the digs where we'd been staying.
After three days of living on a train, doing the same Prague to Kosice journey over and over again cos it was only about £2 return and was our only means of getting shelter, the cash which my da had to fax over finally arrived. We were rich!
We dumped our world's possessions in the left luggage at Prague Central Station and headed for a McD's to kill the few hours before the bus home. My mate was given charge of the left luggage receipt. He ate his MacBurger and then decided to take advantage of McD's spotless facilities before our long bus journey home. You can guess what happened to the left luggage receipt when fannybaws realised there was no bog roll in the toilet.

Best thing about it was that
a) When he used it he had no idea at the time what it was. Thought it was just another receipt.
b) He didn't see fit to tell us what he'd done with it upon realising his mistake and had us raking about his bag and pocket trying to find the thing.
We travelled home with the clothes we were standing up in. He never told us the truth until months later. C.U.N.T.