Really_Tall | Mario & Luigi: Paper Jam Bros. - Trio Drill Fast Forward Glitch @Really_Tall | Uploaded 8 years ago | Updated 2 hours ago
This glitch allows you to break free from a wall you use Trio Drill on!

To do this, first get Fast Forward Storage: http://youtu.be/NO3-RAvtI_g
Then go to this room and move into roughly the same spot I do. Hold R and then drill dash downwards, and you go straight through the floor! You can then go exploring: there doesn't seem to be limit to how high or low you can go, but the camera does stop following you eventually.
Entering a battle will lead the game to force you out the wall after the battle.

Unfortunately it seems like this is the only wall this glitch works on, I have no idea why. It doesn't really serve any purpose, but it does look pretty cool.

All Paper Jam Bros. Glitches: youtube.com/playlist?list=PL_hXCr8GXhARZjmKf4zrlE6b6KhyA7dii