In one way and another through out most of my life I've been concerned with the safety of others. And I've found that most folks aren't impressed by anything but terribly graphic imagery. Apparently not even myself.
I removed the guard from my saw, set the saw blade just barely above the top of the material I was cutting, made the cut. Then I tried to bump the piece of off-cut trapped between the still spinning blade and the fence so it wouldn't get caught and kicked back. Not my finest moment.
These days I do not remove the guard at all, and I have several sorts of push handles. I try very hard not to leave material trapped between the blade and fence. I also bought a different, more expensive saw to make such things less likely. Though I didn't buy the the one that stops itself. That one also destroys the saw (not just the blade, the saw!) stopping it, and was about five times as expensive as the contractor saw I bought.That was a couple of decades ago, I think, and I don't want to know what they cost now.
Do very much like the T-shirt you posted the photo of. That might well get through better than the graphic image I was considering! ;)