When I was about 10 years old, my brother and I got a new babysitter – I think we were too much of handful for our old one. At that age (my brother was 12), we fought like cats and dogs. Sometimes, the fighting turned physical and could be rather frightening to behold.
On one particular occasion, I pushed my brother over the edge and he came after me with a vengeance. Since I was two years younger, female, and much smaller, he really roughed me up before our new babysitter could break it up. She was clearly shaken by the incident.