Super Mario 64 Bloopers: Super Mario Attorney is the 165th video made by SMG4.
Mario is up against the law, as he defends SMG4 from being accused of killing a Goomba. Why? well the world is bull.
The blooper opens with Mario annoying the hell out of Toad (as per usual) in the castle lobby. Mario suddenly notices that SMG4 isn't around. After running up the stairs, Mario asks the other Toad where SMG4 could be teaching King Bob-omb how to fly. After a camera cut, we see that this is true; however, SMG4's method for teaching him how to fly consists of throwing him off the summit until he explodes. After killing the King, SMG4 gleefully hops down from the mountain. We see him jump off screen, and then, we see a Goomba stomped and killed. A Koopa Troopa, noticing this, rushes over to the corpse, heartbroken. The Koopa is then joined by The Police, demanding to know how committed the crime. He then sees SMG4 hopping along, and arrests him. Later, in his jail, SMG4 calls Mario, who refuses to help him because he was supposed to be making spaghetti for him when he was at the Battlefield.
Finally, SMG4's trial begins, and his lawyer is none other then....Mario. Then, the prosecution is introduced, Waluigi. After bombarding Waluigi with rocks and giving useless opening arguments, the Judge finally has enough, and demands they stop. He then calls the first witness, a...TELETUBBY! He describes his account, saying he went shopping. Mario objects saying that Teletubbies don't go 'shopping.' Waluigi corrects him by saying they shop for drugs. The Teletubby continues his testimony only to be interrupted by Dr. Eggman, who claims he knows exactly what happens. He says that SMG4 threatened to rape the Goomba, and killed him with a bazooka while he was teabagging Princess Daisy. Mario is shocked that SMG4 has a bazooka but SMG4 corrects him that he doesn't. Due to the fact that Goomba was stomped on, the Judge has Eggman expelled from the court. Suddenly, Wario takes the stand, much to Waluigi's dismay, and begins shaking erratically and babbling gibberish. He is then literally thrown out of the courthouse. The Judge, having had enough, is about to say his verdict, when suddenly, the Koopa from the beginning of the blooper rushes in and tells them he doesn't think SMG4 did it. He tells them he actually saw SMG4 jump over the Goomba, which Waluigi doubts, claiming "his fat a$ couldn't jump that high". Suddenly, a Toad approaches the Judge, telling him that there is new evidence, and that his family has come to visit. The Judge says he has obtained a photo of the murder, that does show SMG4 jumping over the Goomba, but also shows the silhouette of familiar looking, almost blocky figure, hurdling towards the Goomba. Waluigi dismisses it as a smudge, but Mario claims he recognizes it somehow. The Judge then adjourns the court for a 10 minute recess so he could have a rave party with his family.
After the court is back in session, Mario admits he still can't figure out why he recognizes it. When he's about to pin the blame on Toad, Steve crashes through the ceiling, and Mario puts 2 and 2 together. He calls Steve the true killer and calls him to the stand, and asks him questions. Steve tells the court he had been hit by an airplane while flying, and was knocked out of the sky, where he inadvertently landed on, and crushed the Goomba. SMG4's innocence is proved, and Waluigi is devastated. Suddenly, Wario storms back into the court, but is immediately killed by Waluigi. The video closes with Waluigi with a look of triumph on his face.
- When Wario makes his appearance, The soundtrack "Lively People" (From Phoenix Wright Ace Attorney: Dual Destinies) is heard playing.
- When Tinky-Winky, the purple Teletubby, takes the stand, Ace Attorney soundtrack "Age, Regret and Reward" is heard playing.
- The music playing when Steve crashes into the airplane is the Starman (invincibility) theme from the video game Super Paper Mario on Wii.
- This is the first and only blooper where Steve speaks through normal text.
- This is the second blooper that spoofs a franchise that isn't endorsed by Nintendo, Mushroom wars being the first.
- At one point, Zero-Suit-Samus Aran can be seen dancing behind the Judge's desk.
- The airplane in which Steve crashed is the Air France Airplane from the blooper "Super Mario 64 Bloopers: Super Happy Magical Fun Fun Island". It's the fourth time we can see it in a video of SMG4 (fifth if we also counts its appearance in the outro of the video "Super Minecraft 64 Bloopers: Mineswap").
- When SMG4 throws King Bob-omb, few seconds after the SMG4 s' dialogue, shadow is seen flying diagonally to the upper-left corner. Logically it's King Bob-omb, returning to the arena, however, at the trial Steve says he was flying. Shadow is possibly King Bob-omb's, Steve's, or it is a simple error in the blooper.
- When the Judge is reading a newspaper the icon is actually from Club Penguin.
- According to this blooper, the Judge has a daughter.
- Ace Attorney: The blooper uses Phoenix Wright bubbles, but instead of only saying phrases like " Objection!" or "Hold it!", it says "Bullsh*t!", "Mama F**ker" and "PINGAS", At one point the "Hold it!" Bubble is seen when Mario says "Whoa!" Most of the soundtrack during the video is from the Ace Attorney series. At some points of the blooper, Waluigi's pose mimics that of Ace Attorney character, Manfred von Karma; the main antagonist of the first installment, at another point he mimics the pose of Winston Payne, who like Von Karma is an Ace Attorney Character and a Prosecutor.