If your teacher asks you to get on the floor with a cinder block while he swings an axe at you...say NO!

According to the New York Post, the teacher laid on the floor with a nail-filled piece of wood and a cinder-block balanced on top of that while another teacher stood over him with an axe.

The teachers wanted to demonstrate that 'pressure = force/area,' they have done this experiment many times over the years with no problems. But this time they missed the block and he got hammered in the part of a mans body that hurts the most.

Lucky for the teacher he was just fine and only got grazed. But every man knows even a graze will hurt and make you cringe even thinking about it. Next time he'll wear a cup before he lets someone swing an axe at his crotch.

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