I think the best version is in the Secret Policeman’s Ball movie, which had John Cleese, Terry Jones, Michael Palin and Rowan Atkinson.
Atkinson has wonderful facial expressions and vocal inflection, and Palin’s timing and delivery is great. Here it is:
A phrase that was coined years ago (when a very patrician candidate for the Tory leadership was trying to stress his ancestors’ humble origins):
“prolier than thou”
Same idea, different take:
I have their recording of The Pet Shop sketch from that album. I think it’s their best rendition.