It's rude to snitch on your friends at work.
Dave who had witnessed Phil stealing from a work cash register is asked by the manager if he saw who took the money.
Dave wants to answer the manger's question.
Dave tells the manager that he has no idea who took the money since he didn't see anything.
Dave tells the manager that he saw Phil taking the money from the cash register.
Phil is grateful to Dave for covering for him and not giving up his secret.
Phil is angry with Dave since now Phil will lose his job which makes Phil very sad.