YOU SAID:

I can't believe you would do something as crazy as that

INTO JAPANESE

私はあなたがそのような狂ったことをするとは思わない

BACK INTO ENGLISH

I don't think you would do such crazy things

INTO JAPANESE

私はあなたがそのようなクレイジーなことをするとは思わない

BACK INTO ENGLISH

I don't think you would do such crazy things