Warning, warning! Don't ball drunk!

I met Natalie for an "easy" 6-mile run yesterday then we went over to Zax to meet K, Holly, and Chris. We had an enjoyable summer evening with friends. K had a few beers and seemed to be in good spirits (read buzzed) when we left. When we got home, still in his running gear from earlier, he decided to use the TP quadballer to work out the tightness in his quads. I was on the computer and wasn't paying much attention to him, but I looked over at one point and he was curled up holding his knee. He then announced that he was done and moved onto something else. As I was getting ready to leave this morning, he sheepishly said that he thinks he sprained his MCL using the baller last night. Lesson learned - don't ball drunk, people!