OP here. I am glad that a lot of people understood that it had been meant as a gift with no strings attached, only to have then attached later as a reward for performance. My dad never specified, "This is what you get for doing well." It was, "I had a great day and I want to share it with everyone." The truth is, if he had said he was disappointed in me but felt I should keep the $50 and hoped I would do all I can to improve, I would have respected him and listened to him. It's not about the money. It could have been $5 and I would have reacted the same way. I now understand that gifts are conditional and I have to continually earn every favorable reaction from him, on the off chance he intends to give one.