Context for the joke here: The Japanese version of Battle Network 2 had a glitched interaction between certain objects. The Prism chip would create a crystal prism that caused any attack that hit it to spread out and create area of effect damage. The TreeBomb chips were thrown attacks that left a seed on the ground that would eventually turn into a series of wooden spikes that travelled along the ground. If you threw this seed into a prism, it would cause damage on every frame the two objects occupied the same tile, resulting in enemies and bosses quickly losing HP. This interaction was fixed in the international release of the game, but deliberately left intact in the Japanese Advance Collection re-release of the game.

T-A-C said:

Context for the joke here: The Japanese version of Battle Network 2 had a glitched interaction between certain objects. The Prism chip would create a crystal prism that caused any attack that hit it to spread out and create area of effect damage. The TreeBomb chips were thrown attacks that left a seed on the ground that would eventually turn into a series of wooden spikes that travelled along the ground. If you threw this seed into a prism, it would cause damage on every frame the two objects occupied the same tile, resulting in enemies and bosses quickly losing HP. This interaction was fixed in the international release of the game, but deliberately left intact in the Japanese Advance Collection re-release of the game.

But only disabled in a PvP game.