Carry On Laughing S02 E04 Short Knight, Long Daze

"British humour at its bawdy best."

Though all seems to be well in-hand, all is not as it seems, as King Arthur and Lady Guinevere arrive at their court to find out that amongst other problems, Sir Point-Of-No-Return has left the Round Table... with all its money, and the kingdom on the verge of collapse.