Item Quit

Item Quitting is a technique that tricks the game into loading the incorrect Script when loading a save file. This can be used to one's advantage

Discovery
the earliest known video footage of this glitch was uploaded to youtube on Dec 19, 2011, though other sources claim a GBAtemp user had done it before. it was popularized by youtuber KHAce's video in 2014, gaining 11,111 views.

HOW DO YOU DO IT
it's as simple as it sounds, just open the inventory, and then quit the game, and load a different save file. this can include a new file or even time trial