He effectively gagged himself, you know his fingers are getting itchy.
This reminds me of what my came home telling this week. She told her 3rd graders to put their cheeky parts in their seats. Of course, 3 of them stuck their faces on their chair. She said it was up to them to make their decisions final in the next 10 seconds, but that they would have to remain that way or receive some type of punishment for getting out of their seat if they moved.
So one sure enough remained defiant. My wife said she was okay with it as he was way quieter than normal (gagged himself). After several hours, he wore out and asked her if he could go back to normal. She told him only if he admitted she won. So he did and she was happy.