Pitfall

The Pitfall is an item from the Animal Crossing series appearing in Super Smash Flash 2. When thrown, the Pitfall bounces off walls until it touches the ground, which it then embeds itself into with no trace, but will disappear with a puff of smoke after a few minutes. If an opponent to walk onto its location, it will get driven into the ground and will take some damage, burying him and leaving him motionless and vulnerable to attacks if they are on a hard platform. If the opponent was on a pass-through platform, it will go clean through it and continue downwards. This also happens when the item is thrown at a grounded opponent. If it thrown in midair and hits an airborne opponent, it will get meteor smashed.

Origin
The Pitfall made its first appearance in Animal Crossing and later appeared in Animal Crossing: Wild World. In both Animal Crossing and Wild World, Pitfall is a, somewhat, rare item that can be found around town. It is used to pull "pranks" on other townsfolk by burying it and waiting for the animal to walk by. When the animal walks over it, it falls and gets temporarily stuck in that spot. The player could also fall into its own Pitfall.