Several years ago i worked for a large gaming machine company, who worked us long hours for little pay.
One of our service tech's (based in Preston)got a new job working on the cruise ships servicing the machines working around the Caribbean, he kept this quiet until the morning he was due to leave.
He rang the office telling the boss he was a complete w&nker, and that he was leaving the car in the most expensive car park at the airport that he could find with the keys locked inside.
After hours of searching Manchester airport (the closest) with the spare keys, the Police eventually called days later to say the car had been found at Gatwick with a note on the dashboard saying "keys in glovebox and loads of expensive tools in the boot"
It cost them a fortune to get it out of the car park too!
The guy was from then on always classed as a hero! 😆
(They ended up disciplining another tech who let slip a few weeks later that he knew it was going to happen but kept quiet)