LMAO!!! That's just funny right there, one of those moments that you just shake your head and laugh.
I don't have kids but I find myself getting really agitated training new people at work but I have to remind myself that I myself didn't start out perfecting certain tasks or doing them with speed and efficiency.
That takes time and lots of practice, some people get it quickly, some never do.
Would I get mad at a beginner operator of a lawn mower because he/ she didn't cut straight lines? No because operating dad's mower is stressful enough.
Would I get mad at a new operator if I saw them operating the equipment in a unsafe manor or potentially harmful to the equipment? Heck yes but I would show them the potential outcome of there actions and not just scream and shout.
Unless they have spent hours wrenching on the equipment, maintenance means nothing to them and they won't operate with the mindset of trying to avoid future maintenance like most of us will.
A stressed out kid will be so focused on messing up that he will most likely make more mistakes.
My dad was very particular to how his equipment was operated, and anything I broke while operating his equipment, I had to order, buy and install, he would only pay half the part cost so I learned real quick to keep potential maintenance in mind.
In reality my dad was just being a cheap *** lmao but it was effective.
I still remember to this day splitting a $140 front tire with him because it picked up a piece of wire in the sidewall while I cut the grass, I didn't argue about it, I just told him and he said go order a new tire lol. I went to the dealer, ordered the same tire as what's on the mower, took the old wheel off, had the tires swapped, installed the wheel on the mower and my dad gave me $75 to cover half the tire. I was in HS working 30-40 hours a week @ $8.25 per hour plus school, that was a lot of money at the time for me.
I learned more by fixing my own mistakes than I did getting yelled at.