YOU SAID:
you should wash your hands you detty pig
INTO JAPANESE
あなたは手をしっかり洗う必要があります
BACK INTO ENGLISH
You need to wash your hands
INTO JAPANESE
あなたの手は洗う必要がある。
BACK INTO ENGLISH
You hands want washing.
INTO JAPANESE
あなたの手は洗う必要がある。
BACK INTO ENGLISH
You hands want washing.
That didn't even make that much sense in English.