That was just a bad idea! If the top hadn't already broke off, and dead limbs would fall on him. When I am in the woods I always find sticks and branches stuck into the ground. Sometimes 6 inches or more, and I have pulled the branches out and tried to jab them into the ground, I never get more then half on what it was when I pulled it out. There is a lot of force behind falling branches and he is lucky he did not get hurt.
As I get older, I am beginning to be suspect of the word "common" when used with another word. It seems to be becoming an oxymoron. Examples: common sense and common courtesy.
A lot of people are killed annually doing dumb stuff like this. Hope my children have enough brains to distinguish between calculated risk and outright thumbing your nose at a dangerous situation when they get older.
As a youngster I hooked a chain from our full size Massey 155 to a fresh cut stump of a tree perhaps slightly bigger than what he was trying to push over. Now, I'd already been using this tractor to drag trees 30 ft and longer and up to 18 inches in diameter over to burn piles, so I thought I was hot stuff and going to tear that stump right out of the ground. Is anyone surprised to hear that it didn't budge? No leverage at all. Nothing damaged but my pride.