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I am now sure if this has been found or not, but this is what I discovered. To do this glitch, you must have a console, as it involves cartridge tilting. Here is how to do the glitch. Do a handstand on any pole in the game where it is possible (trees are ok too), and pull the left side of your cartridge out a little bit. Now, press down on your control stick. If done correctly, Mario will appear quite a ways above the pole or tree, and the game will freeze, although you can pause the game, and move the cameras around. If you do this on the trees outside the castle (I haven't tested this in the courtyard), LLL, and HMC, you will glitch through the ground and die, the game will not freeze. Doing this in the pyramid in SSL will glitch you OoB, and the game will freeze. I haven't tried this in SL, WDW, and TTC. It appears that doing it on the cruise ship in RR will do nothing except freeze the game. Good luck with this, I am not sure if this is useful.