Childhood Roommates
When I was very little I shared a room with my older sister 
Barbara. We used to share a double bed. I remember we’d have this imaginary line down the middle of the bed delineating my side from hers. We had this rule that any part of your body that crossed the line was fair game, meaning that the other person could do whatever they wanted to it. She loved to torment me by putting a foot or an arm on my side. I would do my best karate chops to the offending appendage, but she’d just continue. I think I even tried to give her an “Indian burn†but nothing worked. I remember being frustrated and annoyed and I suspect she thought that was funny because she continued to cross the line each night.