I loved having subs as a kid because they were lwk kinda dumb. One time when I was in 1st grade we had a subsite teacher and when the lunch announcement played we all got up to go to lunch but she stopped us and told us that we were to line up in front of her, answer a math question when it was our turn, and then go to the back of the line if we got it right. BUT if we got it wrong we could go to lunch. So everyone just answered wrong on purpose so they could go to lunch. The sub knew about this flaw but expected us all to have integrity but she definitely picked the wrong age group for that.