Dad got a reminder that he's not as young as he used to be....
He bought a pair of jet skis this weekend. Spent all day Sunday and some of Monday cleaning on the fuel system on one and getting it running again. Last night went out to the lake to test them out and apparently they've got plenty of get up and go. He was messing around and threw himself off one. Knee started hurting a little bit later. Speculation from his PT today is that he managed to tear his meniscus. So that pair of jet skis just got really expensive!
I had already been telling him to bring them here. Looks like I may have to take them away from him now. For his own protection.