This is not my joke. I stole it from someone else. I don't know who, as it's been around for a while, at least as long as moa have been talked about. But I figured it would be okay for me to steal it for my comic strip about birds. It seemed to fit. That said, if you think that you came up with the joke and think I'm stealing from you, feel free to contact me and we can work things out.
That joke always makes me laugh, though. It makes me laugh more when Josh and Darryl say it.