Scrape a bunch of Onion articles, link them together in an index, then post an invsible link from your home page that spiders will follow but humans can't see.
Write a script to randomize the words on all the articles and link them in too. Then change the image tags to point to random wikimedia files.
If there's one thing we've learned, it's that there's very little quality control. Channel your inner Ken Kesey / Merry Prankster. Have fun.