YOU SAID:

I can't believe you've done this you've got to be joking

INTO JAPANESE

あなたがこれをやったなんて信じられない

BACK INTO ENGLISH

I can't believe you did this

INTO JAPANESE

なんて事をしたんだ

BACK INTO ENGLISH

I can't believe you did this.

INTO JAPANESE

なんて事をしたんだ

BACK INTO ENGLISH

I can't believe you did this.