One who has 'stumblegrace' has the ability to careen wildly about a space, seemingly out of control... but they can repeat the exact same movements, over and over. It's taking shambling, staggering, and lurching movements, and incorporating&it into a dance. It's endlessly watching the greats of physical comedy, from the Great Stone Face through Danny Kaye up to Michael Richards, studying them, learning their secrets, and applying them to the delight or dismay of passersby.