![super mario 64 3ds whomp super mario 64 3ds whomp](https://www.gamerguides.com/assets/guides/resize1140x-/213/Mario_64_Whomp_Blue_Coin_Block.jpg)
If the glitch is repeated, the value for the Fly Guy's size eventually becomes negative, causing it to render upside-down and inside-out. The Fly Guy's size affects the starting height of a Spin Jump off of it. This is a side effect of the Fly Guy changing size to signal that it is preparing to shoot a fireball. If Mario runs back and forth underneath the Fly Guy in Tall, Tall Mountain, it begins to shrink. If Mario is using a Koopa Shell to surf on the water and gets eaten by a Bubba, the shell stays suspended in the air. When Mario stands at the door leading to the back courtyard and looks to the right while in first-person camera mode, the Boo can be seen floating behind the door.
![super mario 64 3ds whomp super mario 64 3ds whomp](https://www.gamerguides.com/assets/guides/resize550x-/213/Mario_64_Whomp_Jump_Coin.jpg)
After returning to the Boo in the hallway, it should have disappeared. When going to the Whomp's Fortress room's left side again, the Boo's laughter can be heard. The player must then enter the basement, and immediately return to the Boo, which should now be facing forward. The Boo should be facing backwards, and the player must chase it out of the room and into the courtyard. The player must head to the far left side of the room holding the Whomp's Fortress painting, then to the hallway where the Boo is. The player must have collected at least twelve Power Stars, at which point the large Boo appears in the hallway.