“Tough cookie to crack”
Root expressions:

“Tough cookie”
“Tough/Hard nut to crack”



Comments:
I'm flattered that you posted something here. As a corollary, I think I like "hard cookie" to describe a tough person.
William, 11/21/09
hard nut to crack has also been known to start with tough
Scott Worthingotn, 11/20/09



Change each of the three words in this image into a single lowercase letter, and enter them (in order) for the code below.


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