Answer and Explanation: To start an essay with a humorous sentence, you can use a joke, pun, or funny observation that relates to your topic. For example, if you're writing an essay about the importance of reading, you could start with a light-hearted statement like, "Why did the book go to the doctor? Because it had a bad case of the 'novel' virus! Now, let's dive into why reading is as essential as morning cartoons." This humorous sentence sets a fun tone for your essay and engages the reader right from the start.