I’m four to grade we had a kid who was notorious for swinging on his chair. He was the only one in class that would continually do it even if the teacher told us not to. One day, he went too far back and his thumb broke right at the big knuckle part (name? Idk) that connects it to the hand. Luckily, they were able to give him laughing gas and pop it back into place. Kid you not, next day, he was back swinging on his chair again. 🤦🏽‍♀️