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"Chef Pee Pee's Mistake!" is the 128th episode of SML Movies.
The episode starts with Chef Pee Pee getting chocolate fudge brownie ice cream for Bowser while listening to Party in the Tub on the radio, accidentally running over a dog in the process.
Chef Pee Pee starts to freak out so he tries to ignore it and returns to the apartment. He gives Bowser his ice cream. The doorbell rings soon after, and Bowser Junior goes to answer only to find the puppy Chef Pee Pee ran over; it was love for Junior at first sight.
Chef Pee Pee is cleaning when Junior enters the kitchen with a surprise so he goes to tell Bowser about his puppy.
Bowser says it takes a lot of responsibility to own a dog and tells Junior that he can't keep it. Junior keeps it anyway and returns to the kitchen to show Chef Pee Pee his new puppy.
Chef Pee Pee freaks out again and yells at Junior to keep it away from him because it wants revenge. Junior instead goes into the dining room to play with the puppy, and notices he didn't get a drink with his macaroni and cheese. He tells the puppy to get him a drink.
The puppy instead goes to the kitchen and disturbingly starts staring at Chef Pee Pee, thus making the latter give him food, hoping it would make him happy. Chef Pee Pee then goes to lie down only to find the puppy right above his head. He runs away and heads to the bathroom needing to puke but he finds the puppy in the toilet. He then heads to the laundry room attempting to hide in the drier only to find the puppy waiting for him, making Chef Pee Pee admit defeat.
Pee Pee later heads to the parking lot demanding the puppy to run over him and end his life, as Officer Goodman arrives asking Chef Pee Pee what he was doing. Chef Pee Pee explains what he's having the puppy do only to notice it disappeared. Goodman doesn't believe him and takes Chef Pee Pee to an insane asylum, where he mentally loses his mind but finds out the puppy is haunting him in his cell. He freaks out screaming and laughing.
Meanwhile, Junior is still waiting for the puppy with his drink, however, the puppy didn't come back. The video then ends there.
- This is the first and only video when Chef Pee Pee made his mistake.
- This video was originally going to be called "Bowser Junior's Puppy". A later episode has a similar title.
- This video is very similar to Bowser Junior's Pet, where Bowser Junior wants a pet.
- Logan revealed in a dabhdude live stream that this video was redone over 4 times because he was not satisfied with the results and it was originally filmed at the old house.
- This is the second time Chef Pee Pee is listening to one of Toad's songs, the first being Bowser Junior's Summer School 5.
- This is one of the few videos where Chef Pee Pee goes insane.
- This is the first appearance of the Insane Asylum, which Chef Pee Pee was tied up in a straight jacket.
- It is unknown how the workers were allowed to place a Feral dog into a mental ward, at least into a patient's cell.
- The song Chef Pee Pee was listening to on the radio was Party in the Tub.
- This is the 4th mistake video, the first 3 were the Toad's Mistake episodes and the 5th one would be Jeffy's Mistake.
- After Chef Pee Pee ran over the dog, the camera panned a little to far to the right away from Chef Pee Pee and was shaky.
- Also whenever the camera changed to the view of the dog's body, Chef Pee Pee's voice can be heard with the car door closed.
- It is unknown why Chef Pee Pee is fearing the word "Hotdog" as it is a meal and not made of dogs.
- It is also been proven in Dog Show when Jeffy brought in a hotdog in the dog show, which is not really a dog.
- When there was a knock on the door, it would be impossible for small dogs to make a loud knock.