You shouldn't call people idiots because it's rude.
Riley is at a restaurant with her friends, and the server has accidentally spilled a drink on her.
Riley wants to react to the drink being spilled on her.
Riley laughs off the incident and says that it's no big deal.
Riley raises her voice at the server and calls her a clumsy idiot.
Riley's friends see her as easygoing and want to hang out with her more.
Riley's friends are appalled, apologize to the server, and never invite Riley to restaurants with them again.