(1) They put him in with the nut cases.

(2) Great. Now everybody thinks I'm a nut case.

(3) He's a nut case, don't listen to any of his crazy ideas.

(4) Becca is trying to save enough money to buy an island. Beth thinks that Becca is a total nut case.

(5) If you want to create a model of a better way to live and make a living, you don't want to be written off as a nut case.