Hide-a-key tales

Worked with a guy hat had a 80's Cutlass that had some bad rockers.he dropped the car at my house so I could repair it and left a spare key with it. After the repair he picked up the car but for some reason I don't remember I still had the spare key. Fast forward about a year later and he had sold the car to a friend of mine. We drove past his girlfriends house late one night ( April 1st) when it hit me I still had the key to his car. I drove it over and parked it in front of his sisters house as that was where he was living. When he came out and the car was gone he called his sister to pick him up stating the car was stolen. She bought he was messing with her since it was pried in front of the house. It took him a few years to be able to laugh about it.