YOU SAID:
My brother is a stinky poo head
INTO JAPANESE
私の兄は臭いうんちの頭です
BACK INTO ENGLISH
My brother is a stinky head
INTO JAPANESE
私の兄は臭い頭です
BACK INTO ENGLISH
My brother has a stinky head
INTO JAPANESE
私の兄は臭い頭をしています
BACK INTO ENGLISH
My brother has a stinky head
That didn't even make that much sense in English.