Super Mario World/Vanilla Heights/Vanilla Secret 1
After you have gone up the green vine when you get to the trampoline thing, you take it and go to the left to where the blue blocks are supposed to be and put it on it and go in the pipe.
After you have gone up the green vine when you get to the trampoline thing, you take it and go to the left to where the blue blocks are supposed to be and put it on it and go in the pipe.