YOU SAID:

closed mouths don't get fed

INTO JAPANESE

閉じた口は食べられない

BACK INTO ENGLISH

I can not eat closed mouth

INTO JAPANESE

私は閉じた口を食べることができません

BACK INTO ENGLISH

I can not eat a closed mouth

INTO JAPANESE

私は閉じた口を食べることができません

BACK INTO ENGLISH

I can not eat a closed mouth