Is It a Tough Nut to Crack?

The expression nutty means a bit mad or off the wall. It can also refer to a person, who is 'a bit crazy' Another expression with nuts is, it's a tough nut to crack. And i will always associate my dad with nuts, because he loved nuts s and at christmas time, he particularly liked nuts. He used to get little hammers and all different types of nutcrackers for cracking them open. But his hands didn't work quite as well as they used to so he found it difficult to open brazil nuts. So he'd like hammer the nuts beside the fireplace. His mamma said if he made a mess she would crack n his nut