Mine is between just once or twice and more than a handful over the last year, probably about 3 or 4 times so I voted more than a handful. Got a small one the other day that was a bit more than a weeper but not quite a slice. Hadn't shaved with a str8 in awhile and while going ATG under the sideburn the skin bunched up a bit and the toe dug in.

The stupidest one I did was when I was doing my cheeks and was trying to get the skin good and tight. I moved my jaw to tighten the skin a bit more and had the razor touching my face when I moved. It was very slight but I learned not to do that again!