Swyzzle is a screensaver that melts your screen. Back when I was working in the Click 3X office in New York, I would activate the screen melting when I went out for lunch or to meetings, to make it look like my screen was fucked up. To my surprise, no one ever said anything. Right now it only works on macOS and Linux (Ubuntu, not sure about other distros). And it does not yet support multiple displays.