Last night, I had some post-move detritus to transport - old Ikea furniture that was falling apart. The pieces were too big to fit in the car, so I was breaking them up by placing a piece of chipboard on the ground with one end of it on a step, and pressing lightly in the middle until the piece snapped.
One piece was particularly stubborn, so I stomped on it. You can see where this is going; the top half of the piece flew up and hit me on my right knee. It's now the morning after, and the knee isn't as bad as I feared it would be. It's tender and stiff, but there's no swelling.
This does put a crimp in cycling, particularly training for a 3-day tour next week. This isn't the knee I hurt in Lancaster a year and a half ago, but the other one. Injuries suck.