In English there is an idiom "I'll show you X," for example:
A: I think you're crazy.
B: Crazy? I'll show you crazy!
By this B means that he will give a demonstration of how crazy he is, probably in a manner A will not appreciate. I assume that I cannot translate it literally word for word, since using an adjective as a direct object is bad grammar in both languages. What is the most concise way to say this in German?