Tetanus:

I was cutting out holes in a table with a jig saw. Now, I've never used a jig saw, and I'm sure I was using bad form and probably wearing inadequate eye protection. But that went fine. But let me try to carry the damn thing upstairs and I cut my hand on a protruding nail.

The cut really isn't bad, but I think I'm going to try to get a tetanus shot anyway. Getting tetanus would really suck, and I think it's been ten years since I last had a shot.