Would you like to catch your child by surprise?  would it be of value to you to have your child stop in his or her travks and look at you wwondring; "That's not how she's supposed to act!"  Think of one thing your child does that drives you up the wall.  Remember how you usually respond?  Think of something different and totally off the wall or out of the box for you.  The sillier and more illogical it is, the better.  Everytime your child does this bad behavior, follow through with your new response.  Have fun with it.  The sillier you are, the more fun you'll have and yur kids won't know what to do because you're no longer predictable.