Stumpy discovers that if you throw a paper ball made from the pages of a book at someone, they start acting like a character from that book. He and Mr. Cat use this knowledge to wreak havoc in Kaeloo and Quack Quack's lives.
"Let's Play Paper Balls" contains the following tropes:
- Attack of the 50-Foot Whatever: Mr. Cat and Stumpy temporarily turn themselves into giants in order to fight off Bad Kaeloo.
- Dirty Coward: Stumpy ditches Mr. Cat when Bad Kaeloo tracks them down at the end, leaving him to face her wrath.
- Eldritch Abomination: In Kaeloo's absence, Mr. Cat and Stumpy fuse Quack Quack with a bunch of random objects and creatures and turn him into one of these.
- Holy Halo: Mr. Cat puts one on while pretending to be "innocent" to Stumpy.
- Karma Houdini: Stumpy evades punishment while Mr. Cat takes all the heat.
- Skewed Priorities: Mr. Cat and Stumpy beat Kaeloo up and turn Quack Quack into an Eldritch Abomination. Kaeloo is enraged... because during the chaos, she was reading a book and lost her page.
- What Happened to the Mouse?: What became of Quack Quack after being turned into an Eldritch Abomination?
