Grade had secretly sold his music publishing catalogue after promising to sell the Beatles catalogue back to the group. As a tribute to this double talking betrayal Lennon instructed the band to wear 'two face' masks, the band suitably renamed to BOMF (Band Of Mother Fuckers). Performing "Slippin And Slidin", (plus "Stand By Me" and "Imagine") the band mimed to a prerecording with Lennon's vocals live. This last live performance was a return to his Rock And Roll roots with two of the songs performed by The Beatles in the very early days. The titles of these two songs also made it quite clear what Lennon thought of Lou Grade and his business conduct. You can imagine Lennon seizing the opportunity to express his opinion at Grade's very own "celebrations"
Punk attitude a year before punk came along.
