YOU SAID:
Robby rotten is a man
INTO JAPANESE
腐ったロビーは男
BACK INTO ENGLISH
Man is rotten.
INTO JAPANESE
男は腐っています。
BACK INTO ENGLISH
He is rotten.
INTO JAPANESE
彼は腐っています。
BACK INTO ENGLISH
He is rotten.
That didn't even make that much sense in English.