If you’re not capable of doing your job, find another one.
He’s paid to keep his composure.
However, I’m guessing the smart mouthed little girl knows that sometimes people don’t behave like you expect them to, and a smart mouth might get a fist shoved in it.
you nailed it exactly.
He was supposed to keep his composure and he didn’t, now he will probably LOSE HIS JOB over a smartass little kid.
But I bet the smaretass snot now knows sometimes your smart mouth gets you what you don’t expect. I wonder what that kind of behaviour gets her at home?