Broadcast radio stations typically had phone lines for listeners to call. Music stations would take song requests and run contests where the Nth caller would wi

Broadcast radio stations typically had phone lines for listeners to call. Music stations would take song requests and run contests where the Nth caller would win a prize. Talk radio would put callers on the air to chat with the host. Maybe you already knew this, but anyone who remembers broadcast radio would also know it. If you're making a joke, I don't quite get the punchline.