Watch out! Wet cement.. (retro)

I remember back in grade school, Josh, Dan and I made up a game called "Watch Out! Wet Cement". The basic premise of the game was that you couldn't step on any cement because it was wet and you would get stuck in it. Now as you can imagine it was next to impossible to go out and play for recess without stepping on cement. Fortunately you could gain points (steps on cement) by touching certain things. The most common were man hole covers and other underground drainage related objects. Where's the punch line in this story? There isn't one. That's all I've got.