Thanks for the reply, Rhap. I have strongly displayed disapproval and anger when my son does that and would give him a heavy consequence. He does not seem to dare do it to me. But he does that to my husband and most of the time my husband just kept quiet or react mildly which made me mad. But I feel that I should not interfere however sometimes I do when my son goes on and on.

To me that kind of behavior should be given a big consequence. However, how we define big and small is another matter. I just wonder how others handle it.

I read recently on uncommon parenting site and apparently "time out" is not anymore a tool recommended. I wish I knew what they recommend, I have not gone far enough to find out.