YOU SAID:
Please don't swallow the toothpaste!
INTO JAPANESE
歯磨き粉を飲み込まないでください!
BACK INTO ENGLISH
Do not swallow toothpaste!
INTO JAPANESE
歯磨き粉を飲み込まないでください!
BACK INTO ENGLISH
Do not swallow toothpaste!
That didn't even make that much sense in English.