You are kidding me!(你跟我开玩笑吧)

Andy is working in a restaurant as a part-time waiter to earn some pocket money. On the very first day at his job, his boss said to him, "You must handle all the fragile plates and bowls carefully. for every item you break, I will deduct ten dollars from your salary." After hearing that, Andy was so nervous that he broke qutie a number of things during his first month. On pay day, his boss gave him a cheque for ten dollars. He looked at his boss with his eyes wide open and said,

"You are kindding me!"

pay day 是指"发薪日"