NASA is guessing the largest bit was a piece of pliable plastic used as a tile shim, which could have dropped off the shuttle during a test firing of the shuttle's maneuvering .
But its "Modest Proposal" is delivered in a form that is remarkably modest itself its 56 pages are barely thick enough to shim a coffee table, let alone support an entire .
She teamed up with her oldtime dancing partner Bill ("Bojangles") Robinson to do a shim-sham-shimmy before 50,000 in Central Park.