You shouldn't make fun of people's eating habits.
Kevin is a student attending high school and all the students are on their lunch break where a particular classmate is eating heavily.
Kevin wants to enjoy himself.
Kevin doesn't notice his classmate who is eating heavily and spends the lunch break making jokes about a popular movie with a friend.
Kevin pokes fun at the classmate who is eating heavily calling them names and drawing attention to their eating.
Kevin's classmate who was eating heavily gets their fill and goes about their day.
Kevin's classmate who is eating heavily is embarrassed and becomes self conscious about eating to the point of developing a condition.