Museophreniac
A museophreniac is an individual suffering from museophrenia, a type of recurring delusional disorder in which the affected person believes that the band Muse is very talented.
"Dude, this chick I'm seeing is iceberg-melting hot, but she listens to Muse all day and all night and talks about how they invented classical music and other bogus shit."
"A museophreniac! Dump her ass before you get it too! There's no cure!"
"A museophreniac! Dump her ass before you get it too! There's no cure!"