In "The Gem Collector" by P.G. Wodehouse, the narrative explores how discussions that once flowed freely can suddenly come to a halt. The metaphor of water drying up signifies the loss of engaging dialogue and the dynamics of communication within relationships. As topics become exhausted, characters may find themselves at a loss for words, highlighting the ebb and flow of social interactions.

This moment reflects broader themes in the book surrounding connection and the nuances of conversation. The drying up of dialogue suggests that, just like water, conversation is vital for sustaining relationships, but it can also be fleeting, requiring effort and new topics to keep the exchange alive and vibrant.