b23f3a83_rt_DS__Mario_Kart_64__and_more__Function
[Item Name] Mushroom [Does Not Appear In] Nothing [Function] 
Gives the player a short, single speed boost similar to zippers, that can be used to cut through terrain, gain seconds, or be used upon jump bars for very big jumps.
Super Mario Kart - The Mario Kart Racing Wiki - Mario Kart, Mario Kart DS, Mario Kart 64, and more
Function