The Mega Mushroom.

The Mega Mushroom is an item in Mario Kart Wii. It is a huge Mushroom with a gigantic head. It is yellow with red spots. When you received a Mega Mushroom from an Item Box (you are more likely to get one if you are below 6th or 7th place) and you use it, you will become a giant kart/bike driving around. The Mega Mushroom music will play. You may be slower, although you will pass many racers. In your gigantic form, you can flatten the racers blocking your path.You can also drive on grass. You don't last for long, however, so try to crush as many racers as possible.

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