YOU SAID:
Kill a bird with a rock.
INTO JAPANESE
鳥を岩で倒す
BACK INTO ENGLISH
Beat the bird on a rock
INTO JAPANESE
岩の上に鳥を打つ
BACK INTO ENGLISH
Hit a bird on a rock
INTO JAPANESE
岩の上に鳥を打つ
BACK INTO ENGLISH
Hit a bird on a rock
That didn't even make that much sense in English.