You have to spank kids if they're a problem child. I received my fair share of ass whippings by the ole man, and am better for it.
"That's it! I'm telling your father when he comes home from work!" <---the most effective method, because HE was always the one spanking us. Good cop, bad cop.
I even support a swat on the ass in public. Lets them know that just because you're out doesn't mean that the rules go out the window.