"The Dad Who Knew Too Little" is the eighth episode of the fourteenth season of the American animated television sitcom The Simpsons. It originally aired on the Fox network in the United States on January 12, 2003. In the episode, Homer disappoints Lisa on her birthday when he gives her a thoughtless present. He realizes that he knows little about her and decides to hire private detective Dexter Colt to spy on her. Colt compiles a report about Lisa that helps Homer bond with his daughter.

Homer gives his email, chunkylover53@aol.com, to Dexter Colt in the episode so that they can keep contact. In an article for the technology section of the Time website, Selman wrote that he registered that email before the broadcast of the episode, thinking that "if anyone wanted to write an email to Homer, it would be fun to answer back." Once the episode had aired, he logged in to find that his inbox had reached its maximum 999-message limit. According to Selman, most messages "were of the simple, 'Who is this?' or 'Are U Matt Groening?' or 'LOL Homer Rulzzz LOL!' variety. But many people wrote long, thoughtful, attempting-to-be funny missives to [Homer]".

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