Get on your bike and go to any town or route with the fast gear. If you are in a town like Solaceon Town, go to the very top of the city and rapidly press LEFT and RIGHT while riding all the way down through the city. Your character will look like they are spinning while moving forward. If done correctly throughout the whole ride, the route you are heading towards will be glitched with either an invisible wall, a white void, or a black void. Your game might also crash. Sometimes the void can be walked on.