Eminem’s hit 2000 track “Stan” told the story of a dangerously obsessed fan who takes some of Eminem’s more violent lyrics literally and decides to kill himself and his pregnant girlfriend when the rapper fails to respond to his letters fast enough—complete with an awful, tortured coda where Eminem finally writes back only to realize that he was too late. The song isn’t very good and its message seems to be “don’t make Eminem feel bad,” but it became a massive hit thanks to the fact that it used a sample from Dido’s catchy “Thank You” as a hook. In the years since, the name “Stan” has become synonymous with the sort of extremely dedicated fan who would murder their pregnant girlfriend for their favorite celebrity, and now the Oxford American Dictionary has decided to make it an official word.