How do you get the walk on water cheat on animal crossing wild world?

I don't know if it works the same for Animal Crossing: City Folk as for Wild World. You put a Pit Fall seed in front of the river and if you have the hack code for "Danger: Warp Speed" (It may say something different in the Wii, though.) and run into the Pit Fall seed and your character will be in like a pit fall, but you can move your character around. You can go wherever you want in water, but your character eventually get stuck and once you get out and you can't run anywhere. Use at your own risk!