When I was like four, I was over at one of my parent's friend's houses due to a party. I was jumping on their huge bed really high and near the head board. I jumped high and when I was coming down, my chin hit on a nob on the headboard. The impact caused me to bite down REALLY hard and one of my teeth went through my lip.
I was rushed to the hospital and got stitches, which, also really hurt.