Walk away. Just ignore them.
Read more King Arthur QuotesFrom: Monty Python and the Holy Grail
Large Man with Dead Body: Who's that then?The Dead Collector: I dunno, must be a king.Large Man with Dead Body: Why?The Dead Collector: He hasn't got shit all over him.
Sir Bedevere: ...and that, my liege, is how we know the Earth to be banana-shaped.King Arthur: This new learning amazes me, Sir Bedevere. Explain again how sheep's bladders may be employed to prevent earthquakes.
Run away!