YOU SAID:
the big boy ate his big boy bread
INTO JAPANESE
大きな男の子は彼の大きな男の子のパンを食べた
BACK INTO ENGLISH
The big boy ate the bread of his big boy
INTO JAPANESE
大きな男の子は彼の大きな男の子のパンを食べた
BACK INTO ENGLISH
The big boy ate the bread of his big boy
That didn't even make that much sense in English.