Marioception is a blooper by SMG4 uploaded on April 29, 2017. Here, Mario goes into a weird dream that may as well be haunting him.
Mario goes on an adventure into other people's dreams... but... is this whole thing a dream itself?!
Mario remembers the dream invention that E. Gadd gave him that allows him to enter other people's dreams, and despite the warnings he decides to use it anyway.
When Mario enters Luigi's dream, he discovers that he's being attacked by the giant floating head of Dr. Kawashima.
After entering Luigi's dream, Mario decides to sneak his way towards Peach's Castle so that he can enter other people's dreams.
When Mario enters Toad's dream, he discovers that Toad is dreaming about being the dictator of Mushroom Kingdom and that he has turned it into a dystopia, but Mario got killed by Toad's armies in his dream.
When Mario enters SMG4's dream, he discovers that he's dreaming about himself being a meme machine. He questions why he's the only normal person around. He notices that Peach's bedroom is nearby and leaps at the opportunity to enter her dreams.
When Mario enters Peach's dream, he discovers Peach is on a romantic boat ride with his dream counterpart. However, Mario think that he is more sexy than his dream counterpart. He proceeds to push his dream counterpart off the boat, causing Peach to scream "UGLY-ASS MARIO!" and wake up from her dream. Unfortunately, Peach tosses Mario out of window of the castle.
When Mario enters Steve's dream, he discovers that it is an empty space with 5 Steves singing "Mahna Mahna" from The Muppets, much to his shame as he finds it to be rather boring.
When Mario enters Bowser's dream, he witnesses Bowse dreaming about winning the Evil Villains Award for being the best villain of the year. As soon as he enters the building, he is thundered with applause. However, Mario finds the awards ceremony to be boring and he hits Bowser with a giant wrecking ball. This inspires Wario to start a riot.
After Mario wakes up from his dream because Bowser starts to burns him to death, he stated it was all a dream, but Toad appeared on his bed before Mario wakes up again. He jumps out his bed and sees the dream machine ready to explode before he escapes. But he saws SMG4 and shouts he's still dreaming. Then Dr. Kawashima and Steve appears for the last time. Mario saws a door and enters to the Peach's bedroom, and told Peach he's need help, only to find out Peach's head is (whole) Toad and Mario wakes up from his nightmare again. Mario shouts "WHAT THE F*** IS GOING ON?!?!" and caused the earthquake. Mario falls to the cave filled with weird Toads and about almost to hit the Giant Toad's head.
It turns out Toad and Professor E. Gadd are using the dream machine to torture Mario with nightmare. Toad gives Professor E. Gadd a high five.