Obsessive? Me? Nooooooo

I was brushing my teeth this morning when a tune popped into my head that I'm not sure is even real and I had no idea why. It was one of those can't get it out things. It just suddenly showed up and wouldn't stop. Then I suddenly realized I had been brushing my teeth in a jig bowing pattern. So I stopped and it went away. I do remember once doing scales in my sleep with my left hand and waking up giggling about it. I wonder if I knit in my sleep.