When someone is so huge that you are actually afraid of them; the fear that said person might become angered and sit on you in retribution of making fun of said obesity.
If your carpool is a violently obese person, you're afraid to correct any traffic violations for fear they will smother you to quiet any objections to their driving.
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failureshower.