I remeber once when I was a kid, I was goofing off. My dad took my outside and told me if I said one more word in the resturant he was going to stick his cowboy boot up my a$$. My dad didn't make empty threats, I shut my mouth for the rest of dinner and never acted up again.
The restaurant was filled and we got seated to this family of five (three kids).
We order our pizza and tried to have a nice conversation, but we couldn't hear each other over the shouting and rowdy kids sitting at the table next to us.
We just sat and watch how these brats were acting and watching the parents do nothing about their behavior.
Needless to say, when our order came, we had them wrap it up right away so we could get out of their and eat at my house.
The parents looked at us as we left and knew why we couldn't dine there.
That was the worse display of public parenting I've ever seen.