Yes, WannaCry is horrible. It locked people's files and ruined businesses all over the world. With that being said, that doesn't mean people can't have fun with it.
Over the last few days, a new Internet meme has become popular among infosec professionals, and that's the act of photoshopping the WannaCry ransom note on anything that has a screen.
Follow the link and take a look at the screenshots. Some of them are very entertaining.