YOU SAID:
I ain’t understandin’ big cats
INTO JAPANESE
私は大きな猫を理解していない
BACK INTO ENGLISH
I do not understand big cats
INTO JAPANESE
大きな猫がわからない
BACK INTO ENGLISH
I do not know a big cat
INTO JAPANESE
私は大きな猫を知りません
BACK INTO ENGLISH
I do not know big cats
INTO JAPANESE
私は大きな猫を知りません
BACK INTO ENGLISH
I do not know big cats
That didn't even make that much sense in English.