So, the other day I found myself with the need to take 8 4"x22" pieces of 1/2" plywood and put a roughly 1"x1" cutout in each corner, all of them precisely the same size. Not having a band saw, nor being sufficiently confident in my handsawing skills, I clamped them all together into a big stack and made the cuts on the table saw, doing the long sides first with the miter gauge. Then it came time to put the cuts in the ends, standing the stack straight up against the fence, with the offcut side against the fence. This sounds like a dumb idea already, doesn't it?
So I'm completing the first of those cuts, when it occurs to me that "hey, those little offcuts are trapped between the blade and the fence and under the rest of the workpiece, and when the blade gets through the last one..."
RAT-TAT-TAT-TAT-TAT-TAT-TAT-TAT!!!
"...they're all going to get shot out of there like a machine gun. Ow."
Only one of them hit me, and it didn't even give me a bruise, but a few inches to the left and it would have hurt a lot more. I did the rest of those cuts very, very carefully, with the offcuts to the outside and me on the other side of the fence.