Arthur: What, 'is'?
Knights: Agh! No, not 'is'.
Head Knight: No, not 'is'. You wouldn't get vary far in life not saying 'is'.
Knights: No, not 'is'. Not 'is'.
Bedevere: My liege, it's Sir Robin!
Minstrel: [singing] He is packing it in and packing it up
And sneaking away and buggering up
And chickening out and pissing off home,
Yes, bravely he is throwing in the sponge.
Perhaps we should quit now -- this could go on for the rest of the night :)