The phrase translates from Portuguese as Dom Frederico lost his memory, and it circulates online as a short reaction clip rather than as a line tied to a widely documented film, show or song. Its appeal lies in the name itself: attaching an ordinary forgetful moment to a specific, formal-sounding person makes the joke feel like a news report about a private embarrassment. Shared in short videos and meme edits, it works best when the audience already understands the setup, so its meaning has grown mainly through repeated reuse rather than through a single viral origin.