"Mean Mr. Mustard" is a satirical track by The Beatles, released on the *Anthology 3* compilation. Written by John Lennon, the song features a distinctive, repetitive melody and lyrics that mock the pretentiousness of a fictional art dealer. It reflects Lennon's sharp wit and his tendency to use music as a vehicle for social commentary, a trait evident throughout his discography. The recording captures the band's dynamic interplay during the late 1990s sessions, showcasing their enduring ability to craft memorable, character-driven songs. While often overshadowed by their earlier hits, the track remains a significant example of The Beatles' later work, demonstrating their continued relevance and creative energy well into their final years. Its inclusion in *Anthology 3* highlights the band's legacy as a group that consistently challenged norms through humor and musical innovation.