I used have a physics teacher who loves to wear loose sleeveless shirt... so whenever she is at any table coaching any of us, all of us will crowd around her for a nice peek....
Also during the lab lessons, she will be sitting behind the lab table(which has cabinets) while we listen across the table. There was many times when we will slide open the cabinets and see her open her legs WIDE....
As the table is on a raised flooring, the view was at almost at class's eye level and a sight to behold.