My silly kids!

I have a rule in my house that we can not say the words stupid or hate. So Andrew and Adriana have started tattling on each other and will tell me that so and so said the s or h word. Well they know they will get in trouble if I hear them say it so now they walk around and say......you're the s word........no, you're the s word. Not sure I'm getting my point across to them. Then onto the word hate. I tell the kids they can only say the word hate if they are talking about the devil. So now Andrew walks around the house saying "I hate the devil, I hate the devil, I hate..hate...hate...hate the devil". As much as I like hearing that he hates the devil, I know he is only saying over and over so he can say the word hate. I think I am slowly loosing the battle!