Saying 'Santa wont come if you're naughty'.

[shellbell3]

I do use the elves are watching when they misbehave, or they may get potatos, gets them a little worried but honestly would never not give them gifts b/c overall they are pretty good kids even tho they do have there moments. But to your OP with the rude comment, I don't think I would cancel xmas I would hate them to miss the magic of santa. From what you've said with the kids being a handful I don't think santa not coming would really help the situation.

[squeezles]

I don't think you should make threats you can't or won't follow through with