YOU SAID:

Jim is the fattest fastest guy i know

INTO JAPANESE

ジムは私が知っている最速の太った男です。

BACK INTO ENGLISH

Jim is the fastest fat man I know.

INTO JAPANESE

あれは私がよく知っている人です。

BACK INTO ENGLISH

That is the man whom I know well.

INTO JAPANESE

あれは私がよく知っている人です。

BACK INTO ENGLISH

That is the man whom I know well.