Just Your Fool" (or "I'm Just Your Fool" as it was first titled) is a rhythm and blues-style song written and recorded by American jazz and jump blues bandleader/pianist Buddy Johnson and His Orchestra in 1953. Called an "R&B anthem", the song features a big-band arrangement and his sister Ella Johnson on vocals—her "delicate and deceptively sweet phrasing was ideally suited to ballads such as this". "I'm Just Your Fool" became a Billboard R&B chart record hit, reaching number six in 1954.
In 2010, Cyndi Lauper recorded "Just Your Fool" for her album Memphis Blues. It features her vocal with harmonica by Charlie Musselwhite. The song was released as a single and became a record chart hit. She performed it live with Musselwhite on the third season finale of the Celebrity Apprentice reality game show.