Oh no... he just gets worse...
Paul McCartney's old guitar is being auctioned on Friday, and they have the item on the show.
Richard just had to come out with with a faux-casual "you know I play a little" and proceeded pick it up and strum away.
I really hope someone will youtube it.
FWIW the woman from the auction house has taken her look from the girlfriend in Spinal Tap, the one who took over as manager and planned the tour by horoscope.
EDIT: It's now later in the show and he had to make it clear that he played his own composition on PMc's guitar.