When I first started quilting in the 90's I heard a stories such as the person who was talking with her hand while holding a rotary cutter and clipped off the tip of her nose. Also, stories of people needing stitches on their feet because they dropped their rotary cutter.
I also remember being told "don't let your children or husband near your rotary cutter because they will test it. Often a man will test it like he does a pocket knife -- trying to shave the hairs on his arm. He will cut his arm before he knows it!"