I was watching the Aussie open because I like tennis, and because I'm fascinated by the idea that while I'm freezing my heinie off, somewhere in this world it's above room temperature. It warms me just to think about it.  Then I come across the tidbit of information that every nine games, the players are issued new tennis balls. Then I got to thinking that a horse poops every hour.

And that's how you become a cartoonist.