In this excerpt, a character is surprised to hear that someone has claimed a nearby golf course is superior to the famous St. Andrews. The conversation indicates a misunderstanding, as the speaker realizes that his sister's comment may have been taken out of context. It's clear that the speaker is anxious about the implications of such a bold claim about the golf links.
The humor lies in the reaction of the catapulted character who had not expected his words to cause such a stir. He references a qualifying statement he made, hoping to clarify that he was not fully endorsing the comparison. This interaction highlights the miscommunication that can arise in casual conversations, showcasing Wodehouse's signature wit and comedic style.