Super Diaper Baby 2: The Invasion of the Potty Snatchers

Super Diaper Baby 2: The Invasion Of The Potty Snatchers is a 2011 book written by Dav Pilkey and is the sequel to The Adventures of Super Diaper Baby. It was released on June 28th, 2011. This book is about Super Diaper Baby and Diaper Dog fighting Rip Van Tinkle, a giant man made of pee, and his cat Petey. The book contains 7 chapters (though, technically, it has 8 since it has chapter 4 in 2 parts).

Plot
The story behind the creation of the original Super Diaper Baby comic by George and Harold is first shown. It is revealed that when their principal, Mr. Krupp, read it, he tore it up, and asks George and Harold why they can never write about anything besides poop. Stumped on what else to write about, George and Harold ask Mr. Krupp. In response to this, he shows them his favorite book when he was their age, "How the Grinch Stole Christmas" by Dr. Seuss. After reading the book, the two friends become inspired and decide not to write about poop. After some careful consideration, they decide to make a sequel to Super Diaper Baby where the main antagonist is made of pee. Thinking Mr. Krupp would be proud of their next epic novel, Mr. Krupp finds it even more offensive than their previous story and becomes furious. In the detention room with busy work yet again, George and Harold say to the reader that as usual, they hope we like it better than Mr. Krupp.

Comic
The Hoskins and Diaper Dog set up a picnic in the park where Billy ends up over a tree, but then he and Diaper Dog force a doll back from a bully, get a ball out of a portable toilet and get a toe-broken kid to the hospital in a few seconds. That night, Mr. Hoskins feels depressed, but after a reminder by his wife, he decides to read "Mechafrog and Robotoad are Enemies" to Billy, but he can now read it to him, instead, due to the powers he gained. Meanwhile, two criminals called Dr. Dilbert Dinkle and Petey the Cat sneak into Jim's Bank, but before Dr. Dinkle can measure for his invention, careless Petey accidentally pushes the lever and Dr. Dinkle turns into water, then Petey accidentally destroys the invention, meaning that Dr. Dinkle is made out of water permanently, but Dr. Dinkle thinks that he actually likes being made out of water when he is able to turn into a puddle and sneak into the vault to get the money. Back at his home, Dr. Dinkle finds out he will never pay the water bill, but his supply is cut off after two weeks. Petey complains he needs water for drinking, but Dr. Dinkle goes to sleep and Petey drinks him in revenge. The next morning, Dr. Dinkle yells in surprise to be let out, right when Petey needs to urinate and the cat leaps into his litter box. Dr. Dinkle discovers that he is now made out of urine as Petey coins the name "Rip Van Tinkle", much to his dismay, and makes jokes at his expense, making him go to multiple places, all of which kick him out for smelling horrible.

The following night, Rip Van Tinkle puts Petey in the Robo Kitty 3000, before he evaporates and rains pee on people. Soon the pee drops break into houses to steal toilets for the Robo Kitty 3000 to destroy. One drop gets caught by Billy, so it tricks him into thinking that it will repair the toilet, gives him a juice box in bed, then the Kitty destroys the toilet. The next day, Mr. and Mrs. Hoskins are in pain, but put on diapers, while the mayor decides to drain the pool. The pee drops unite to create Rip Van Tinkle, while Petey steals diapers to sell to the people who were robbed of toilets, but Rip Van Tinkle takes Petey's money and the cat soaks him up with toilet paper. Super Diaper Baby and Diaper Dog arrive, only for Petey to evolve the Robo Kitty 300 into the Supa-Mecha Kitty 3000. Super Diaper Baby flies to buy catnip and pour it inside the control seat. Petey goes crazy after having the slightest sniff of the catnip, bounces around, and detaches the Supa - Mecha Kitty 3000's head. Super Diaper Baby and Diaper Dog grab Petey and carry him off to jail.

A drop of pee gets flicked up and lands in the Mayor's pool, where it grows into an enlarged Rip Van Tinkle, whom the duo finds wreaking havoc at the train tracks. Rip Van Tinkle uses the train as nunchucks and hits both of them. Rip Van Tinkle overpowers the two, and smashes a building right on top of them. However, Super Diaper Baby remembers that a week before, he put his juice box in the freezer and it froze solid, giving Diaper Dog the idea to push down on the Earth. It works, making the Earth go farther and farther from the Sun. Rip Van Tinkle freezes and Diaper Dog and Super Diaper Baby carry Rip Van Tinkle while Super Diaper Baby gets an idea of how to cheer up his father.

Back at the Hoskins' house, Billy tells Mr. Hoskins that there was an ice monster outside (Rip Van Tinkle) and tells his dad he's brave enough to stand up to him. Diaper Dog, hiding behind and making a voice for Rip Van Tinkle, talks to Mr. Hoskins. The "ice monster" is "scared" of Mr. Hoskins' talking and leaves Earth. While someone asks for Mr. Hoskins' autograph, Super Diaper Baby and Diaper Dog take Rip Van Tinkle to Uranus, only for Deputy Doo Doo to say The Baby again.. They come back, and take a picture with Mr. and Mrs. Hoskins with a news reporter and put on a newspaper saying "Diaper Clad Dad Saves The Earth!".

Trivia

 * The book's subtitle is a reference to the 1956 film Invasion of the Body Snatchers.
 * Rip van Tinkle was originally supposed to be named Pee-Pee Longstockings (confirmed on Pilkey.com) before he got an official name. Dav made his name Rip van Tinkle due to the fact that the former name would not make sense as Tinkle did not have feet (thus no stockings to put on).
 * Petey, Tinkle's cat was actually from The Adventures of Dog Man, a Treehouse comic and Dog Man, and book series by the author.
 * The book originally said the second graphic novel, but since Ook and Gluk is the second graphic novel and was released before this book, it became the third graphic novel.
 * The 2nd part of Chapter. 4 is a parody of How the Grinch Stole Christmas, but excludes the part where the villian sees the error of his ways and returns everything he stole (Rip Van Tinkle felt no remorse from his crime and everyone still peed their pants due to no toilets). This is because George and Harold used Mr. Krupp's copy of the book which had the last 7 pages torn out because he believed the plot sounded more realistic that way.
 * On page 36 on top of Billy's bookshelf Robot Guy, Chicken Girl and Cockroach Girl, 3 of the 5 F. A. R. T. S, can be seen. Guy With a Stapler Taped To His Head can be found on a "Coming Soon" poster on a comic shop.
 * It was thought to have a different cover as seen in the original Super Diaper Baby and Captain Underpants and the preposterous plight of the purple potty people.
 * On page 78, Rip van Tinkle breaks the 4th wall by saying they're not supposed to talk about poo.