Definitions by n8andmcdonaldscrew

rusty nut 

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

rusty nut by n8andmcdonaldscrew August 4, 2009