We were going over the 4th graders' homework which had to do with finding the area of a triangle. One boy got all the problems wrong and realized though he had multiplied base times height, he forgot to divide by 2 - not an uncommon mistake. We moved on, had the rest of the class and I thought all was well until I heard him say to his friend as they were leaving : "triangles are stupid".
I just hope years from now he remembers the origin of his strong aversion to all things 3 sided!