I don't think that there is anything wrong with getting a lump of coal for Christmas if you deserve it. It won't tramautize the child. It will make him regret being a little bad a$$ and behave.
Christmas is not about getting presents; it's about celebrating the birth of Christ. You aren't entitled to getting something. That's just an extra treat for the holiday. I think more children should get nothing for Christmas (not have presents hidden upstairs like kiml122's little brother
), maybe then they'll count their blessings and truly appreciate everything that they do have.