I came home yesterday and started singing a particularly famous christmas song that I will not name in fear of infecting you with the virus. But I hadn't heard

I came home yesterday and started singing a particularly famous christmas song that I will not name in fear of infecting you with the virus. But I hadn't heard the song anywhere, or at least I could not remember. Out loud, I began to sing it, right there in the kitchen, and when I realized it I felt fear. Now it's gone again, and I don't know when it'll come back.