Hmmm... not sure why I ended up with two pages on the wiki. The other page, with slightly more interesting text, is here:
Bryan OakleyDid you hear the one about the three legged dog that walked in to a saloon, jumped up on a barstool, slammed his good leg on the bar, and with a steely look in his eyes growled "I'm lookin' for the man that shot my paw!"
If you don't have a feel for stereotypical American western movies, you probably won't get that joke. Even if you get it, you probably won't think it's funny.
But I do. Scary, isn't it?