Pitfall

The Pitfall (or Pitfall seed) originally came from the Animal Crossing series. It is a prank item which when buried can be used as a trap. When animals or even you walk over it you fall down a pit. Animals cannot get out unless you talk to them or you go to a different acre and return. In the original Gamecube version, visiting animals did not fall down these holes, but this change after the release of Animal Crossing: Wild World.

Trivia
The pitfall was changed to pitfall seed after many confused the item as the Activision game, "Pitfall!"