Well my kids are the whirlwind types. No pedestal for me to climb on here. DD needs to go to school and is pushing every single boundary she can. But I've never said that Santa won't come. I tried once to say something about Santa and being good and it sounded hollow to my own ears so I didn't finish the sentence and moved on.

If I don't buy it myself then my intelligent DD won't stand for it.

Also - it's not what Christmas is about in this house. So therefore I won't use it as a threat or punishment.

Eta- missed the question at the end sorry Kazzo. If my child said that to me there would be a discussion about speaking respectfully, speaking to others how we want to be spoken to and hopefully an apology from my child. And then, as MadB said, I'd probably reconsider my approach to consequences.