giant mushroom
If you mean by gaining a Mega Mushroom or growing to a large height, you cannot. You are able to in Mario Kart Wii.
Aero Glider:150cc all cups Star rank
no, unless you have cheats for that game
the only way is to moonjump(hack\cheat)
Go on the Mii Channel on the Wii home Menu and edit your selected Miis size so that he is quite big and then go back on to Mario kart wii and look at your mii. He or she will be an adult mii.
all you have to do is first beat 50cc,100cc,150cc,and mirror 5 times and then put the 300cc code in and it will be 600cc really because i did 300cc and i tried the way i but over and the 600cc code makes it way faster than 300cc! it's the most awesome code you can possibly get on (Mario-Kart-DS)
When you start the big bully level star with a rocket boost then when he's at the edge use a mushroom to knock him down.
I last played on 'Mario Kart Wii' about 2 months ago, but from what i can remember, they are them big sliver blocks that float in the air. And when they see you coming, the drop down to try and crush you. They are in alot of maps. For example Bowsers Castle.
100cc Grand Prix: Finish Star Cup in 1st Place or, Play 1,500 Games for the Shooting Star
Easy! Just Stop being a big NERD and move out of your moms house
No. Heavy characters only get to drive heavy cars.
It makes me go big.