In case you haven't run across this (sometimes funny, sometimes appalling) spoof of Wikipedia, take a look, using the link in this post's title. "Uncyclopedia, the content-free encyclopedia!" It has multiple language versions, proving that there are people all over the world with time to waste writing entries of a laughable nature. See this list of the various Uncyclopedias. You may also want to see this history and explanation of Uncyclopedia and its international counterparts at Wikipedia.
The hollow "puzzle potato" reminiscent of the Wikipedia puzzle earth, is the logo of Uncyclopedia, and the image above is from the Uncyclopedia entry on its logo (well, of course!).
For another source of geek humor, try this link to Wikipedia's Bad Jokes and Other Deleted Nonsense. My favorite continues to be the fake bird classification article, Birdidae, but there are many other pseudo-articles, bad jokes, puns, visual jokes and more. But be warned, it is distinctively geek humor. What passes for Wit of the Web is not for everybody.