When I was in elementary school, I had a teacher named Mrs. King. One day in class we had projects where we were suppose to speak to the class and explain our research. During some other student's turns, one of my class-mates kept making jokes not related to class and I tried my best not to laugh (it is a natural reaction) at them. So she sent us out of class, and coincidentally that day in our other classroom (with another teacher) we were suppose to have a pizza party since we won some competition. She forbade me from eating at the party, and during it I couldn't handle either the injustice nor being excluded from the party. Soon later my other teacher over-turned my teacher's decision.