The shouts of "Bell Boy" are the lines of Jimmy from the disgusted realization of what the Ace Face actually was, symbolic of the theme of disillusionment throughout the album.
Pete Townshend said of the song's meaning: He meets an old Ace Face who's now a bellhop at the very hotel the Mods tore up.
And he looks on Jimmy with a mixture of pity and contempt, really, and tells him, in effect, 'Look, my job is shit and my life is a tragedy.
The song was performed once more at the Royal Albert Hall in London on 30 March 2010 at a benefit concert for the Teenage Cancer Trust.
At Quadrophenia and More shows and 12-12-12: The Concert for Sandy Relief, it was performed with archival video footage of Keith Moon in Charlton.