In the scene where Graham Chapman is wrestling himself and tearing his limbs off, the voice of Graham Chapman appears saying 'You stupid bastard, you've go no arms left". This is an actual clip from the Black Knight scene in Holy Grail.
The song 'Sit On My Face (and Tell Me That You Love Me') is an extended version of the barbershop quartet song performed by Graham Chapman and other members of Monty Python at the Hollywood Bowl