I was shaving it was with the grain pulling the skin tight...the blade never jumped, or slid, or wiggled but I had this very wide (not deep) cut in the middle of my upper chin below my lip. I mean WIDE (1/4" approx)...since it wasnt deep the styptic stick fixed it no stitches or anything...but man I swear....it was shaving normally and then all of a sudden oh $@#$$ thats gonna leave a mark...blood everywhere.....still couldnt tell you what happened.....Im pretty sure it was either someone playing with a voodoo doll or the razor gods were against me!!!!