I'm sure. [He smiled in a reassuring manner. Hopefully.]

Baseball is a game played with a small ball. One player tries to hit the ball as it's thrown by someone else and they run around bases in order to make it all the way around and score a point. The people on the other team try to catch the ball when it's hit or throw it to the base before the other player reaches it in order to get them "out". After three "outs", the players switch spots.

...of course, that probably makes it sound even more complicated.