Continuity mistake: When Chaucer is introducing William at the end of the movie, he stands on the arms between the chairs of Prince Edward and the lady, a foot on each arm. When it cuts to a side view showing William's father to the Prince, Chaucer is no longer in between the chairs. Not to mention the fact that the Prince is looking at the railing (where Chaucer just was). The very next shot, he is back between the chairs. (02:03:05)
Revealing mistake: After a naked Chaucer tells William of his gambling problem, and Simon the Summoner says that he owes 10 gold florins, when Wat angrily grabs Chaucer to punch him we see that Chaucer is actually wearing some type of underwear in the close-up. (00:26:05)
Answer: Kate, Roland, Wat and Chaucer having a farting contest.
Grumpy Scot