I got one as a "prize." I wanted to test the blade, so I used it on paper. But the paper was hovering in the air so as not to allow for the cutting of my pillows and sheets. So I tested the blade on my skin. It left a little white line. It was stupid. I did it twice more just to see if I could get my skin to break. Two more white lines. Then they split a minute later. Now they are itchy like there's no tomorrow. Then I decided I wanted to know whether the blade could cut a tougher part of my skin, and it turns out it can. Now I am very itchy. And I can't scratch because I'm bleeding. Scratching little tiny bleeding lines makes little tiny VERY bleeding lines. Grawr.