Pretty common to see if you are in the US at least, builders tend to install a plug backwards if it’s operated by a light switch. Not code or anything, just something they do.

I love showing this to people who didn’t see it back in the day and see if they think it’s AI. The way the dude moves is so uncanny, but he’s on a wire when he’s jumping around with that flute. Such a badass remix, I can’t get this out of my head sometimes.