Lady Danger
When women are so connected by their monthly magic that they can read each other's minds and predict the worst cramps.
My friends and I got our periods at the same time. We all knew what the other was feeling before they even said it.
My sister and I got our periods on the same day. We both knew we were going to cry at the same time, and we did.
My mom and I got our periods at the same time. We both knew we were going to pass out in the same room.