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1.
A tool invented in Victorian times for adding a good finish to door handles.
Look at that filthy nobscratch
by elprza October 10, 2003
 
2.
To scratch ones nob. Also used as a descriptive word to describe somebody whose actions and thoughts are about as useful as the action itself.
You nob scratch! (Your action is about as useful as me scratching my nob)
by Bishmeister June 27, 2006