YOU SAID:

dont do that ever again its very nonchalant of you

INTO JAPANESE

二度とそれをしないでください、あなたはとてもさりげなく

BACK INTO ENGLISH

don't do that again, you're so casual

INTO JAPANESE

二度としないでください、あなたはとてもカジュアルです

BACK INTO ENGLISH

don't do it again, you're so casual

INTO JAPANESE

二度とやらないでください、あなたはとてもカジュアルです

BACK INTO ENGLISH

don't do it again, you're so casual