After the Fab Four Have finished sing "Sgt. Peppers Lonly Hearts club Band" and during the lead on into a "With a Little Help with my Friend"

When they sing " Billy shears!!!" They point to ...John! Last I checked Ringo sang W.A.L.H.F.M.F!! I didn't think it was a slip-up nessarily but I can't explain why they did that.