| Please note the following:
"Jeffy Breaks His Leg!" is the 438th episode of SML Movies.
Jeffy gets a boo boo.
The video starts off with Jeffy not wanting to go to school. Mario tells Jeffy to go brush his teeth, to which jeffy smears the toothpaste all over the mirror so he doesn’t have to brush his teeth. Then the video cuts to Mario complaining that Jeffy is taking too long. Jeffy then taps on the window and says he doesn’t have to go to school. Jeffy then sticks his foot up to the car and Mario runs it over. Mario calls the doctor and is met with Brooklyn T. Guy with a chicken leg. Brooklyn T. Guy asks if it’s even Broken to which Jeffy says "hold on let me make sure". Jeffy pulls out a hammer and starts smashing his leg with it. Brooklyn T. Guy says that it’s definitely broken now if it wasn’t before. Mario wants the doctor to take an X-ray of it. So, Brooklyn T. Guy takes an X-ray of his chicken leg instead. Brooklyn T. Guy finally takes an X-ray of Jeffy's leg to show that it’s broken so Jeffy can’t attend any school. The rest of the video is just Jeffy being a nuisance to Mario asking and demanding stuff like ice cream and Spongebob toys. Jackie Chu then comes to give Mario Jeffy’s homework. Jeffy refused but soon managed to finish it in when Jeffy started to lose its cast. When Mario tells Jeffy to go to school and take off his cast, Jeffy went to put his legs by the tire hoping to not go to school another 6 weeks and the video ends.
- Brooklyn T. Guy
- Jackie Chu
- Rosalina or Nancy (mentioned)
- SpongeBob SquarePants (Toy)
- Patrick Star (Toy)
- Jeffy has a different pose in the thumbnail.
- This is the first SML video of May 2019.
- This is the second video of 2019 to be panned by fans due to Jeffy being ungrateful to Mario.
- This is the 2nd video of 2019 that Bowser Junior doesn't appear, the first being Black Yoshi's Koolaid Problem!.
- Mario states that he doesn't know what Fortnite is, however he knew what it was in Jeffy Plays Fortnite! and Jeffy The Psychic!. However, it may be that he has only heard of the game, but does not really know much about it.