It's rude to yell at the top of your lungs
Annie is having dinner at a restaurant.
Annie wants to get a different dish than the one she has.
Annie talks to the waiter politely, and he brings her a new dish.
Annie yells at the waiter at the top of her lungs, and he brings her a new dish.
The waiter enjoys his job so much he ends up picking up another shift and makes extra money.
The waiter is so upset by Annie's actions that he ends up quitting his job.