Because you have no idea what sort of person I am, I thought that you might like to see what happens in actual lessons. So I will put videos of people learning or making mistakes and you can see how I actually responded on the day. (This might be a bad idea as you may hate me)
Yes, I was involved in a car crash on the 15th of February 2014. See how I dealt with having the back of my car destroyed. I impressed myself with my first thoughts being to my student and then not losing it. This shows you how I behave when things go a bit wrong....
My student went to turn across the path of an oncoming vehicle, I stopped the car, the Mercedes behind didn't!