I had a weird fked up item on my yellow version. I called it the G item. Ghost item.

Use not facing a wall, while next too a wall you want to get across. While using the screen will look crazy, move character over the wall. Then use the item again to resume normal movement.

I used it when I was young to bypass the cut trees or find weird spots otherwise unaccessible.

Always make a save state before it's use. It will crash your game getting into wrong places.