When I was in first grade, we had a relatively young teacher. She was probably 25 or so. One day, while we were supposed to be coloring our pictures or working on writing sheets or something, she took the opportunity to cut paper in one of those guillotine paper cutters at the front of our class. As she would bend over to work the lever, her boobs kept hanging out of her blouse. She must not have been wearing a bra. (It was the 70s.) While she didn't notice, I did. I watched for a while, until one of the girls in the class went up to her to warn her that her chest was hanging out. To this day, I can't remember what I was supposed to be working on, but I do remember seeing her breasts. So, clearly, an underdressed teacher is a distraction. A dirty, filthy distraction.