A Fake Item Box is an item found in the Mario Kart series. They resemble regular 'Item Boxes', but will cause a vehicle to roll on contact. They usually have an ¿ instead of an ? in Mario Kart 64 but the occasional ones are red or do not have ? at all. Nevertheless, they still release the same effect if the player happens to stumble upon one.
Fake Item Boxes are different than Bananas and Shells in that other items can go through the Fake Item Boxes. This makes Fake Item Boxes useless for protection of the rear of a Kart, as they will not block incoming attacks. However, Fake Item Boxes do block incoming attacks in Mario Kart 64, but the player can not throw that item forward; in all the other games, the player can throw the Fake Item Box forward or backward.
The fake item boxes returned to their original look from Mario Kart Double Dash!! in Mario Kart Wii, except for a texture change. The fakes now have rainbow-dot texture patterns now instead of a checkerboard texture. They also behave in the same manner as in Mario Kart Double Dash!! and even spin around like normal item boxes.
In battle/team race mode, the fake item boxes will become blue for the blue team, but retain their original color in the red team. At first glance, fake item boxes for the blue team appear similar to regular item boxes, but if the player happens to look closer, the fake item boxes do not have a rainbow iridescence on them and they sport a ¿ like regular fake item boxes.