Put your shoulder to the grindstone
Posted: July 20, 2012 Filed under: ACTION, BODY PARTS, THINGS | Tags: expressions, grindstone, malaphor, mixed idiom, shoulder, words 4 CommentsThe Master uttered this advice to a co-worker many years ago. A brilliant malaphor, it is a mix-up of “nose to the grindstone” and “put your shoulder to the wheel”. As a grindstone is a type of wheel, the confusion unfolded and another masterpiece was born.
Malaphors 
BTW, what’s a grindstone?
Typically a stone to sharpen knives
Shoulder 2the wheel?
Yes, you are right. My wife told me that was the other idiom in this malaphor so I updated the post.