Goomba's Belt of Humiliating Protection
From KGB Wiki
Goomba's Belt of Humiliating Protection, or the Green Belt, is a green felt sash used in the game Capture the Flag with Stuff. It is activated by skipping and singing the lyrics to Yankee Doodle, which then grants the wearer immunity to capture and stun effects. Although only one person may wear the belt, the protection granted by the belt can be extended to others by holding hands or linking arms.
As the mysterious halls of Wean and Doherty continue to shift in strange, unnatural ways, the magical rules that govern the Green Belt may fluctuate and change over time.