The main four participate in a writing contest where the prompt is "What is your biggest dream"?
"Let's Play at Writing" contains the following tropes:
- Anywhere but Their Lips: Mr. Cat kisses Bad Kaeloo on the cheek.
- Innocently Insensitive: Kaeloo writes an essay about how her ideal world would be, which includes calm and peace for everyone. Since Kaeloo and Mr. Cat spend most of their time bonding over fights with each other, Mr. Cat takes it to mean that Kaeloo doesn't want him in her ideal world and feels upset that his best friend apparently doesn't care about him anymore.
- Jerkass Has a Point: After hearing Quack Quack's essay, which is supposedly the best essay ever written in the history of the world, the contest judge wonders aloud if he should even bother reading Kaeloo and Mr. Cat's essays. Mr. Cat whacks him with a mallet because it wouldn't be fair to him and Kaeloo if the judge declared a winner without even reading all the essays.
- Shipper on Deck: When Mr. Cat flirts with Bad Kaeloo, the whole audience starts chanting "Kiss! Kiss! Kiss! Kiss!"
