I haven't had anything worse than stepping on a nail since I'm cautious
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Stepping on a Lego. No joke. Not been through anything like some of the posts here (chemical burns, multiple fractures etc.) but I have fallen 25 feet and accidentally landed feet first with rigid legs, had teeth drilled without anaesthetic and I've been stabbed through my lower arm. The stabbing and drilling didn't hurt at all and the fall only a bit. But Lego... That shits nasty.