How to deal with a spoiled kid?

Ugh I'm SO sorry! Next time he throws a tantrum get down to his level and calmly tell him to stop it right now or he won't be getting anything. She should NOT be paying anything for this kid! Your getting paid to watch the brat, you don't need to buy him anything. If he tells you what to do tell him, "I'm your boss right now okay? So do what I tell you and we won't have any trouble." You CAN quit if you need to. If he doesn't stop then you need to tell the parents that you won't be able to watch him anymore if his behavior doesn't improve because your sick of it. Good Luck!