Re: My 4 year old son _IMPOSSIBLE!
Sounds like he's pushing you around pretty good. With my children, all teenagers now, I had my most effective discipline by hitting them where it really hurts---no, not physical punishment!! I mean, if they misbehaved, then their punishment was to be deprived of something they really loved. If my daughter sassed me, she would not be allowed to play with her little ponies today. If my son didn't let me know when he was leaving the neighborhood, he could not ride his bike today.
Make the rules real clear with your son, and choose your battles wisely. But, if he perpetrates a punishable offense, think of the thing he loves the most and deprive him of it for a period of time (doesn't have to be too long). That ought to get his attention pretty well.