Ok, before ANY of you say ANYthing about how dangerous this was, and how badly I could have been hurt, Joel already said all those things you're thinking of saying, and I already thought them just after it happened, and besides, it's not like I did it on purpose.
I got my hand caught in the Kitchen Aide.
Why was my hand in the Kitchen Aide? Because it takes almost three whole seconds to turn it off and lower the bowl, so if you want to add something to what's inside, you either have to be prepared to lose those three seconds, or you have to add while the machine is working. And if what you want to add is something like flour, you can either use a measuring cup and get flour everywhere (because they don't really fit between the machine and the bowl if you haven't turned off the machine and lowered the bowl) or use your hand (because hands fit anywhere). But if 'hand' is the route you chose, you have to be focused and on the ball, because that machine doesn't stop for no one.
So I got my hand crushed against the side of the bowl by the pastry hook, which sounds delicate but isn't, and really all that happened was my middle finger swelled and will turn purple in about a week, long after it's done hurting, and my first two fingers are kind of stiff today, but it could have been waaaay worse. It was one of those moments when you're glad no one is around, because you know that you're not that hurt and that in, like, five minutes, you'll be fine, but it hurts that much that you're nearly in hysterics, and also, you're mad. It's like when you stub your toe: you're in pain, AND you're furious with a table leg.
Also, I hadn't let go of the handful of flour before the whole crushing thing happened, so when I whipped my crumpled fist out of the bowl, flour went everywhere. Also, I lost precious time cradling my hand and whimpering. So...foiled on two counts.