Static.

We've had a party today. Our step-grandson was 18,so the whole family, all 13 of us, went out for our lunch, to a new Italian restaurant, and then back to his house where we sang, danced, and ate cake. He'll go out with friends later in the week.
This is our granddaughter, organising the music. She found it amusing, that her hair was climbing up the wall with static.