The sad reality is that people never change their mind in the moment, and if they do, they won't tell you. People are emotional creatures. His ego was 100% in defense mode. All that said, he could very well use more detergent and warmer water next time. At least as long as his parent isn't around to see lol.

(Edit: Reading this back it feels really condescending. To be clear, I'm the same way. I think everyone is. I'm no exception. I've caught myself doing this after the fact.)