Please fire me. I started to make a pizza for a customer who ended up cancelling his order, but...

Please fire me. I started to make a pizza for a customer who ended up cancelling his order, but saved the blank pie I’d just made in case someone ordered in the next few minutes (they aren’t good for long). An hour and a half later, we get an order, and my boss tells me to use the blank I’d forgotten to throw away. I warn him of how old it is, and he tells me food cost is more important, it’s not my job to think, just use it. I do. The customer, who also ended up being the CEO of the franchise ordering incognito, said it was the worst pizza he ever received, and my boss blamed me to his supervisor, who had a came to the store to shout at me.