Haha, if I have, it never made it into my memory. But I did have an FM system for school as a kid. Sort of like a microphone the teacher wore around their neck that streamed the audio directly to my hearing aids. The signals could go far. If the teacher forgot to mute it or turn it off, I’d hear the sounds of them going to the bathroom down the hallway. Which was super irritating when I was trying to focus on my notes.