Even just in my own personal life, I've heard similar stories from more than one person. I've also both heard and personally witnessed with my own kids them trying to manipulate the primary TV of the house like it's a touchscreen, so I'm sure that's a story that's independently happened many hundreds of thousands of times by now, if not millions.
(I don't have a cute story, though. They just tried it once, I told them it didn't work that way, please stop smearing the TV with your hands, and they stopped. No cute questions or comments about the TV being "broken".)
