Question:
Dealing with chutzpa (brazenness).
Answer:
Let 'em have it! Who do they think they are, starting up with a great guy like you?
That being said, here's a special technique from Rebbi Yaakovson shlit"a (see Al Techetu baYeled, "Spare the Child", as well as E Efshar Acheret): Shtika romeimus, don't say a word! Silence! And then say (and signal) calmly, "emotionless" and like a "robot", the "command", whatever it may be ("Sit down"). And then the kid will yell: "NO!". So you make another, even longer and more "awkward" silence, and then repeat again, "emotionless" and like a "robot": "Sit down." The pressure is just too great for a little neshama to bear, and he should eventually cave in, with the help of Hashem. With our award-winning "silence-robot" technique, you can tame even the greatest lions! (P.S. Don't forget to be their "friend" as well).
The truth is that teaching mishmaas, proper respect for authority, is probably the most important concept that you could ever teach, and this is exactly the concept of yiras shemayim, Fear of Heaven.
We'll end here with a story: Once, Rebbi Moshe Shapira z"l entered his home, only to find there a little thief. Rebbi Moshe just stared him down without flinching, until the thief ran out of the house, scared for his life. It is known as well how the Chief of Police of the city Kelm was a talmid (student) from the yeshiva, and his absolute "calmness" would take down even the toughest trouble-makers.
