You-Know-What

From the Super Mario Wiki

The You-Know-What is a disc containing unknown information in Super Paper Mario that should be delivered to Bestovius in the Piccolo sidequest. In return, he'll give Mario a Training Machine. He claims that he used to use it, but upgraded to a better, more compact design.

Super Paper Mario Items
Attack Items	Bone-In Cut • Fire Burst • Ghost Shroom • Ice Storm • Mighty Tonic • Pow Block • Shell Shock • Shooting Star • Thunder Rage • Volt Shroom
Defense Items	Block Block • Courage Shell • Turtley Leaf
Recovery Items	Big Egg • Black Apple • Blue Apple • Cake Mix • Dayzee Tear • Dried Shroom • Fresh Pasta Bunch • Fresh Veggie • Golden Leaf • Honey Jar • Horsetail • Hot Sauce • Inky Sauce • Keel Mango • Life Shroom • Long-Last Shake • Mild Cocoa Bean • Mushroom • Peachy Peach • Pink Apple • Power Steak • Primordial Fruit • Red Apple • Sap Soup • Shroom Shake • Slimy Shroom • Smelly Herb • Super Shroom • Super Shroom Shake • Ultra Shroom • Ultra Shroom Shake • Whacka's Bump • Yellow Apple
Other	Catch Card • Catch Card SP • Gold Bar • Gold Bar x3 • Gold Medal • HP Plus • Mega Star • Mystery Box • Pal Pill • Poison Shroom • Power Plus • Sleepy Sheep • Slow Flower • Speed Flower • Star Medal • Stop Watch
Important Items	Ancient Clue • Autograph • Card Key • Cooking Disk • Crystal Ball • Diet Book • Floro Sprout • Elemental Tablets • Golden Card • Goldfish Bowl • Helmet • Keys • Orbs • Paper • Return Pipe • Training Machine •You-Know-What