Super Mario 64 DS Glitches

Yoshi carrying an invisible object
As Yoshi, go to somewhere with at least two Goombas (better if they are close together). First, swallow the first Goomba and turn it into a Yoshi Egg. Then find the second Goomba, and at the exact instant you stomp it, press A. If done correctly, the egg will explode and Yoshi will be holding an invisible object in his hands. If you stay in the level for too long the game will crash, and when you try to exit the course, the game might crash. If none of those happen, the chances are the game will crash when you enter another course.