Return Pipe
The Return Pipe is an item found in Super Paper Mario for Wii. Merlon will give this to you after you put the first Pure Heart in the first Heart Pillar. It is a red warp pipe with white and red stripes. You can use this to bring you back to Flipside. You can't use it in Sammer's Kingdom or the Pit of 100 Trials (both Flipside and Flopside Pit of 100 Trials.) You also can't use it if you are paying off the ruppies to Mimi. If you use it in Castle Bleck, it will bring you to Flopside instead.