Yeah. Mmm hmm. Remember a few weeks ago when I got the brilliant idea to go ice skating? I fell, but only once. I honestly have no recollection of how I landed, just that I wound up on the ground. Since then, I've been completely unable to kneel on my left knee because whenever I put pressure there I have a sharp pain. It's perfectly functional and painless in normal day-to-day use, it just hurts like bloody hell when I press hard on that particular spot. I might not even know it except for the fact that the weird configuration of my loft requires me to crawl into bed at night.
Maybe it's a bone bruise. Maybe a slight fracture. And maybe it's just a normal owie. I'm not too worried about it, and I'm not terribly inclined to go to the doctor since the treatment would basically be ice, Ibuprofen, and being careful with it. I can do that without professional assistance.
But still... this is clearly my body's way of saying, "Hey dumbshit... don't do that!"