I'm afraid this isn't my website anymore. Not really, anyway. Go here if you're looking for that, probably via a link from someone else's blog. On the other hand, if you're one of the several people who do a websearch for the meaning behind the phrase inside joke, it's relatively simple to explain. An inside joke is a joke that not everyone will get. You need "inside" information in order to understand the reference that makes it funny. That might not actually be why it's called that, but really, it's as good an explanation as any. The truth is a matter of plausibility.