The Diary of a Wimpy Kid Fanon wiki was a wiki that partnered with the Diary of a Wimpy Kid wiki with the hope that fans could create fanon pages about the Wimpy Kid books. However, the site, along with its Q&A counterpart, were both closed by wiki staff due NSFW editing and a toxic community. A variation of it was opened in October 2020, bearing some resemblance to its original but less messier.

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