Changing the Rules isn't Fair

I was playing Go Fish with my friend, Tommy today and I asked him if he had any fours. He said he didn't when he really did have some fours. Then he said that it was the rules that all boys named Tommy never have to give away their fours.

I don't think changing the rules after the games has started is fair. Especially a rule like that one that doesn't make any sense. Tommy is a bad, bad boy and needs to be sent to the principals office for at least two years and certainly lose any leadership position he might have in our 3rd grade class.