Mouth Worms
I had my covid hair back, it was shoulder length. I also had a full beard and giant mustache. My hair was styled a little bit though, turning up at the ends like a 2000s hair style.
My mouth had little white things sticking out of it though. On closer inspection, scratching some of it off, I found they were little caterpillars in white cases/cocoons. There were several of them, and several more down in the gums. Terrifying.