YOU SAID:
Once a fool always a fool
INTO JAPANESE
一度ばかはいつもばか
BACK INTO ENGLISH
once a fool is always a fool
INTO JAPANESE
一度ばかはいつもばかだ
BACK INTO ENGLISH
A fool is always a fool
INTO JAPANESE
バカはいつまでもバカ
BACK INTO ENGLISH
stupid will always be stupid
INTO JAPANESE
バカはいつまでもバカ
BACK INTO ENGLISH
stupid will always be stupid
That didn't even make that much sense in English.