Super Mario Bros Glitches

Glitches in Super Mario Bros 3

In Super Mario Bros 3, in World 4, go to the 5 stage. At the beginning go up the pyramid of blocks until you get to a 2nd Parakoopa. Jump on it two times so it is a shell. Pick it up, go to the edge of the cliff (to the right), and run at the ? block, right before you get to it, let go of the shell, and keep running. You should get stuck under the ? block. A video has been made to show you this: