In order for this cheat to work,you have to take a feather(most important thing)and go to Donut Plain 2
(the second stage)then,go to the place where you found
the key and the keyhole and unlocked the Green Palace.
take the blue shell and climb up the plant ladder.Go to
the side and make the shell float up into the air with
your cape(make sure the shell won't fall).As you float the shell up,it will give you scores first(100,200,400,
800,1000,2000,4000,8000 and 1up).The shell sometimes falls and you have to start all over again.But if you
manage to time your shell,it give you 1ups in no time!!