It's wrong to call people making complaints cry babies.
Nathan looks out of the window annoyed as his classmate Charles makes negative comments about their field trip and conditions of the bus.
Nathan wants Charles to stop talking about negative things.
Nathan tells Charles that they should play a game on the ride home.
Nathan tells Charles that his criticism is akin to a two year old having a temper tantrum, and that he should stop before he continues to embarrasses himself.
In the future Charles plays the game whenever he's in a car with someone.
Charles blushes and sinks down into his seat completely humiliated.