1 definition by n8andmcdonaldscrew

derived from the term "not the sharpest tool in the shed" well a "rusty nut" is not even in the shed its that random thing you found in your yard that you keep just in case you find what it goes to
used to describe someone dull, dumb, slow, or a person dragging an entire team or group of people down
sam is therusty nut of the school. her test scores lost all of our federal funding
by n8andmcdonaldscrew August 4, 2009
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