Earlier this year we rented two parking spots on a private way near our house, because the parking area we had been using is being redevloped. It's two spots in front of a house whose landlord lives on the other side of town, rents out the house, and rents out the parking spots separately: I could see that one spot was being used, but the other was empty and had a semi-portable little "no parking" sign in the middle of it, and the house had a sign with the owner's number inviting people to call her if they want to rent.
When I called, I learned that one spot was available right away, and the other would be available on Sep 1st, so I said great I'll take one starting in June and the other when it becomes available. Filled out leases, paid her, and went and moved the "no parking" sign from the empty stop so I could put a car there. Dragging it off the spot, to the edge of the yard, was difficult; even though it's not attached to anything, its base is a small bucket filled with concrete that's very heavy.
Sometime later in the summer, I took the car out one morning to go to an appointment, and when I came back the sign was back in the middle of the spot. I had to stop in the middle of the private way, go drag the sign off to the edge again, and then park. I wrote the owner to ask if she knew why the sign had been moved into the spot, and she said she didn't.
Another time later in the summer... the same thing happened again. I was only out for a couple of hours in the morning, again, and came back to find the sign in the middle of the spot. Wrote the owner again, and again she didn't know who'd done it. But this time, she told me that when she saw the sign she thought I put it there. It turns out... the sign doesn't even belong to her.
I don't know why she thought it was mine, since it had been there long before I first called her to ask about these spots. My one guess was maybe the person who rented the other spot, knowing that only one spot was rented, had put it there to ensure the second spot was clear, to give them a bit more room to pull in or out? But surely they'd have noticed by now that our car was there consistently.
And then it happened a third time, after September 1st. We now have both spots in front of that house, both paid for, although the second car had been stored away at my stepmother's a couple of miles away for a few months, so we were still only parking one car.
This time, I asked the owner if she minded if I just took the sign away from the property entirely, since it wasn't hers. She didn't mind. I dragged it all the way around to the alley belonging to our house, which is around the corner, so you can't see where it is if you're on the private way. And that's it - nobody has ever contacted the owner about it, even though her phone number is still very clearly posted on the front of the house.
So where did this sign come from, and who might've been moving it into our parking spot multiple times - any guesses? Not that I expect to ever know the answer.