Learning to put your first bra on is hard. Learning to put your first bra on in under five seconds lest your baby brother throw open the door at any moment and see you half-naked? That's substantially harder. Welcome to the life of a tween girl who shares a bedroom with her brother.
Welcome to the life I led for a substantial portion of my childhood. When I was 5, my brother came bursting into the world, full of snips, snails, and puppy dog tails. And after a stint in the bassinet in my parents' room, he was moved into the room I'd called my own for five years. It was a sleeping arrangement that would last until I was in high school -- a brother and sister together, sharing a bedroom.
Needless to say, it's one of the worse things I see parents doing to their children.