Not me personally, but when a few friends of mine were looking for a student house, they discovered a toilet in a very odd place.
In the bathroom, there was an empty space where the toilet should have been. The pipes were there, just no actual toilet. The toilet was in the garden, and filled with earth, with a basil plant in the bowl.
Apparently, the landlord (who was showing them round) was just as surprised as they were. The funniest thing though, was that (rather than being incandescently furious), the landlord was more impressed that they'd managed to get the toilet through the house and into the garden in one piece!!! Still, no idea why they'd done it.
(And no, my friends didn't take that one)