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Rosalina is talking with Mario when Jeffy enters the room and tells Mario that he gave his shirt to a pig. Mario asks why Jeffy would do that, and Jeffy responds with fucking around in order to be late. Mario then sees the pig rolling in mud. Mario takes off the shirt and washes it. The shirt is blank and Jeffy doesn't know his name. Once Jeffy goes to school, he tells Junior that he doesn't know his name, so Junior writes "Poopy Butt" on Jeffy's shirt. Junior then tells Jackie Chu that "Poopy Butt" is a new student. Jeffy introduces himself as "Poopy Butt." Jeffy starts walking home when he needs to tie his shoe. King Strongbottom is seen driving when he hits Jeffy with his car by accident. Strongbottom offers Jeffy $1,000,000 if he doesn't tell anyone what happened. Jeffy then tells Mario that Strongbottom gave Jeffy $1,000,000. Mario and Jeffy celebrate, but Mario then realizes that the paycheck is signed to Poopy Butt. Chef Pee Pee is seen calling his father when Mario tells him that Jeffy got paid $1,000,000, but Jeffy signed the check as Poopy Butt. Mario then calls Goodman. Goodman states that he changed his name to Poopy Butt and cashed in the check. Mario walks away crying. Chef Pee Pee then reveals that he also changed his name to Poopy Butt, and he asks Mario where the paycheck is. The video ends with the question, but Chef "Poopy Butt" is still asking Mario where the check is.
- Bowser Junior
- Chef Pee Pee
- Mr. Goodman
- Jackie Chu
- King Strongbottom
- Bully Bill (background, no lines)
- Joseph (voice only)
- This is the first time that Goodman stole money from Jeffy and changing his name to poopybut
- This is the first video to come out in September 2017.
- This video marks the return of King Strongbottom, who hasn't appeared in two years. It also confirms that he is not dead. This is also the first time Jeffy meets King Strongbottom.
- King Strongbottom might return as a minor character after this episode if Logan remembers him and might be included in the movie also with his family.
- At this time, it is unknown if this is the original Strongbottom puppet, or a new one, as the King Strongbottom puppet was hacked up for use as a dead body in "The Secret Door!".
- This is the first time Jeffy gets run over by a car.
- Bully Bill is seen wearing bandages after being beaten by Jeffy in Jeffy Gets Bullied!, The Test!, and Picture Day
- The Jeffy puppet from "Jeffy's Brain!" is used in this video.
- This is the second appearance of the pig, first being Bowser Junior's Piggy Bank!
- There were 2 references to Mario The Babysitter! but there was some differences. Instead of "Hi my name is Jeffy, See? It says on my shirt Jef-fy" It was "Hi my name is Poopy Butt, See? it says on my shirt, Poopy-Butt"
- King Strongbottom's car is a 2015 Cadillac Escalade.
- This is the first time Brooklyn T. Guy does not appear 3 videos in a row after his 7 month vacation.
- The whole episode wouldn't have happened if Mario would've wrote Jeffy's name on his shirt in the first place.
- This is the first time we see Rosalina and one of Lovell's characters, Chef Pee Pee and Joseph in a video together since Substitue Teacher!. It may be possible that Lovell no longer hates Elaina.
- When Jeffy informed Rosalina that school started in five minutes, he showed only four fingers to emphasize this fact, as the Jeffy puppet has only four fingers on each of its hands.
- Mario said the bank wouldn't accept a "shirt" with Poopy Butt written on it, instead of check.
- When Goodman says Mario and Jeffy "wasn't" named Poopy Butt, he should've said weren't or aren't.
- King Strongbottom called Chef Pee through a phone. However, in his past appearances, he had no idea what a phone was. It was possible Chef Pee Pee or someone else taught him.
- Also, since Chef Pee Pee was on a phone call with an iPhone, the phone call must have been faked because the actor (Lovell) holding Chef Pee Pee never appeared to press the Hang Up button on the phone, instead places it on the oven without touching the screen.
- The puppet used for Jeffy during the scene when Jeffy gets ran over by King Strongbottom's vehicle has different shoes, due to the white stripes on the soles.
- This may be because it was a stunt double, not the original Jeffy puppet.
- Jeffy, Mario, Goodman and Chef Pee Pee mention King Strongbottom's Escalade as a "truck". This is not true as Cadillac Escalade is actually an SUV Car.