The quote expresses a humorous caution against wearing extravagant costumes, particularly that of a lizard, at fancy-dress events. The author, P.G. Wodehouse, suggests that such pretensions can be off-putting and that fewer people adopting such bizarre personas would contribute to a more pleasant society. By presenting this idea in a light-hearted manner, Wodehouse encourages readers to reflect on the absurdities of certain social behaviors.

The underlying message emphasizes the importance of simplicity and authenticity in social interactions. By advising against the excessive and whimsical practice of dressing up as unconventional characters, Wodehouse hints that embracing a more grounded approach could foster a more enjoyable environment for everyone. In essence, the quote serves as a comedic reminder of the potential pitfalls of overindulgence in theatricality at social gatherings.