When I was young, I spent much of my spare time torturing my sister. The usual stuff, for a big sister. It was fairly reciprocal, and despite the three year age difference, she quickly grew stronger than me, and could pin me down better than I could her. We hit. We bit. We kicked. We tore each others hair. Gave chinese burns. Physically and mentally, the onslaught could be brutal. And ten minutes later, we would be playing together again, as thick as thieves.
But sometimes, I was just plain mean.
I look back on those times and wish that I could step into the snapshot in my mind, sweep her up and protect her from myself.