Back in shop class we did a lot of stuff that was dangerous or could lead to an arrest. People were poked with a broom handle between the butt cheeks if they were bent over and the teacher was not looking. Others got a kick to the back of the knee so they fell over. Every now and then if you were focued on something you could get a quick slap from something between the legs.
We learned early on to watch where you faced your but when you bend over and to keep your legs closed.
One year we had a women in the class and the instructor was always by her side. Dont think he trusted her with any of us.
In wood shop guys like dropping pieces of scrap on the table saw and watching it fly across the room. Other times they sat up the belt sander to run and plugged it into an extension cord while the switch was in the on position.