I will beat you right here and no one will say a word because you deserve it.
The results were usually smiles from anyone within ear shot.
My other favorite line was: Keep it up and I'll show you what child abuse is. Today my boys will sigh and say, "yeah I know, if you ever catch me doing that you will have my hide."
Lest anyone think I am cruel, these are velvet chains. They are allowed a lot of latitude. If they don't like my decision and they think they can reason me out of it, go ahead and give it a try. If the argument is good, I'll change my mind. Most of the time the decision stands and at that point you risk mamma's anger if you push it too far.