There is a surrealism picture with fish in the air by Salvador Dali- and nintendo's take is absolutely stupid (stupidly funny, that is.) Use the action replay hacking device to enable moon jump and sprint with L+up. Enter the room with the painting of Jolly Roger Bay, and while going through the door, sprint. If you haven't gone through the wall the painting on, time for take 2. If you have, navigate (using the touch screen map) your way with moon jump's help, to the side of the room where the fish tanks would be. When you've made your way inside one of the fish tanks- if you've gone in the room, time for take 2. If inside the tank, observe. You don't swim, you just stand, while the magically fish, swimming in air, go through your head. If you're in the tank close to toad, go to the closest point in the tank to toad and you can speak to him. Now you'll know why the fish are oddly hypnotic. Mario 64 DS is a silly old game- when hacked.

PS: Hack for test map two, and stand on the numbered pads in the corner- they're test outs for warps (like on bob-omb battlefield). Another fun thing on test map two is the 3 strips of land with Japanese letters- one is sand, one is ice, and one is snow.