Why are people disappointed with he show?

The Royal Nonesuch opens to a house packed with men. The Duke greets them and hypes up the audience for the King. The King emerges completely naked, covered in paint, and crawling on all fours. The audience laughs their heads off, and he is called back to do it twice more. Then the Duke thanks them all and wishes them a good night. The men are furious that the show is so short and realize they have been "sold," or cheated.