Thing that make you swear ultrasonically. Yikes. I wacked a chisel once and a shard 1" long buried itself in my thumb. That was good for 7 hours in the hospital and I was the one who finally got it out. I knew an air tool salesman who was bragging how safe a framing gun was and promptly shot himself through the wrist. He didn't say fudge.
He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.
Thomas Paine