Exactly. When my dad yelled "STOP!" I stopped on a dime and gave change. No argument, no "WHY?", because I knew: non-negotiable command. Stop first, and ask why later (didn't need to ask why on one occasion, because the answer presented itself in the form of a truck. (more instant reinforcement).
I had the immense displeasure recently of taking a 4 hour Amtrak trip with not one, not two, but three misbehaving children: loud, whiny, fake crying, refusing to stay in their seats. All three mothers were pleading repeatedly with their spawn to "please behave."
Please behave?? WTF? Since when is behave preceded by please more than once? Future Darwin winners, for sure.