YOU SAID:
eat a potato a day to stop the doctor from kissing a fish
INTO JAPANESE
医者が魚にキスするのを止めるために一日ポテトを食べる
BACK INTO ENGLISH
Eat potatoes all day to stop doctors kissing fish
INTO JAPANESE
医師が魚にキスするのを止めるために一日中ジャガイモを食べる
BACK INTO ENGLISH
Eat potatoes all day to stop doctors kissing fish
That didn't even make that much sense in English.