YOU SAID:
He wants to eat a dirty coochie
INTO JAPANESE
彼は汚いクッキーを食べたいと思っている
BACK INTO ENGLISH
he wants to eat dirty cookies
INTO JAPANESE
彼は汚いクッキーを食べたいと思っています
BACK INTO ENGLISH
he wants to eat dirty cookies
That didn't even make that much sense in English.