Shooting on funky film is something my cool photography friends do. I have a few friends who love working with expired film on their 35mm cameras, and one in particular who used to actively destroy film by putting it in the washing machine or attacking it with acid.
It all adds an unpredictability – a volatility, really – to the art of taking a photograph, and it's also a wholeheartedly analog thing to do. After all, memory cards don't so much "expire" as just stop working. And while I guess you could put your camera in the washing machine or throw acid on your sensor, that's probably a step further than most folks are willing to take just to get a weird photo.
