A true story recounted by someone just returned from a certain Greek island I'll be returning to soon:

Son needs to go to another island to present certificates to a College. Older brother will accompany him so they take the family car to the ferry port. Father will go down on scooter later and retrieve the car. Problem: when he gets there- they've forgotten to leave the car keys and are staying overnight. No problem: there are spare car keys in the safe back at the house. Problem: the safe key is on the same ring as the main car keys which are with the sons on the ferry...

RtS