Do you Need More Money?
If you really want to buy something but you don't have enough money? Well, do this. But it only works if you've been in Bowser's Flab Zone before.
1.Bring Mario and Luigi to the Challenge Node.
2. Drop down, skip the 2 doors, and go through the pipe.
3. You will be brought to a higher area. Than hit the blue thingy and it will tell you about the 99 block. USE IT WISELY! You can only do this 1 time in the whole game no matter what!
4. To the left of the blue thingy there is a ? block.
5. Hit it and then press A. And just like in the Special Attack Green Shell, press A and B repeatedly untill you get to 99 hits. When you get 99, you can double your coins. After you do, even if you get 99 hits again, you can't double you coin total anymore.
Note: Once I missed right at 98! And I know from experience, that when you lose the block at such a high number, yes, it's super duper annoying.