Ok so I know how we can get a song stuck in our heads that is on repeat for days, weeks or months. What is driving me nuts is when I’ve got the song in my head my brain is singing the lyrics but I tap my teeth to the beat of the music. It’s this constant tap tap tapping. The other thing is when I’m watching tv or listening to a conversation my fingers are discreetly typing out the dialogue like on a key board. Maybe it’s along the same line as rocking back and forth or wiggling my foot etc when anxious. Anyone else have the teeth thing?