Mark Twain's skill as a humorist shows in Chapter XI. He uses a play on words in this chapter. What is it?

Please specify the book you're reading.

To identify Mark Twain's play on words in Chapter XI, you can follow these steps:

1. Step 1: Locate Chapter XI: Find the specific chapter in the book where you suspect Mark Twain's play on words exists. In this case, Chapter XI.

2. Step 2: Read the chapter: Read through Chapter XI carefully, paying attention to the word choices and language used by the author.

3. Step 3: Look for humorous passages: Keep an eye out for any instances of humor or playfulness in the chapter. Mark Twain was known for his clever use of language, wit, and satire.

4. Step 4: Identify the play on words: If you come across a line or a phrase that seems to have a double meaning, a pun, or a clever wordplay, that is likely the play on words you are looking for. It could be a pun, an unexpected twist, or a humorous use of language.

As an AI, I don't have access to specific book chapters or their contents. Therefore, I cannot provide you with the exact play on words in Chapter XI. However, by following the steps outlined above, you should be able to find and appreciate Mark Twain's skill as a humorist in Chapter XI of the book you are reading.