Performing the glitch
To perform this glitch, one must create a stage that has a "box" of blocks (or three normal-sized blocks, one to the left, one to the right with a gap of one space between the left block, and a block above the gap, and then a pass-through platform in the gap) with a set of blocks to walk upon underneath it, by just one space.
One must then set the game to Special Brawl, Giant and play as Snake. They must dash to get underneath the blocks so that Snake will be standing inside the box, with his head poking through the platform. If Snake uses his taunt here, the box will stay once he lifts it up. They can then proceed to do this as many times as the player wants, until the game cannot handle any more on-screen items appearing. Some character's attacks that produce items, like Diddy's Peanut Popgun or R.O.B's Gyro, will stop working. Also, when Wario uses his side-special, the bike will appear, but vanish as soon as it falls over.