I actually had to teach sex ed to an all boy class of 15 year olds.... you can imagine.... after about 20 mins I actually just gave up and sat there resting my head on my hand while the snot faces threw tree berries at my head, they were just bouncing off my head and I didn't move, I just thought "oh well, today they are paying me $40 an hour to have shit heads throw tree berries at me." I put the whole class on detention for their regular teacher to deal with.