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Kindergarteners have none. I went into a class, introduced myself, and told the kids I would be spending some time with the boys (color vision testing). One of the kids shouted to his teacher: "I KNOW HER! SHE FIXED MY BLOODY NOSE!" When it was his turn, I asked him what his name was, and at point blank range he shouted at me, "YOU DON'T REMEMBER ME?! YOU FIXED MY BLOODY NOSE!!"

It was the first time I actually enjoyed being yelled at during work.