Ins and Outs

The baseball season is upon us and an office manager we know passes along this explanation of the game, given to her by her grandson:

You have two sides, one out in the field and one in. Each man that's on the side that's in goes out and when he's out he comes in and the next man goes in until he's out. When three men are out, the side that's out come in and the side that's been in goes out and tries to get those coming in out. When both sides have been in and out nine times, including the not outs, that's the end of the game.