YOU SAID:
i am a dunderhead with poopoo on me face
INTO JAPANESE
私は私の顔にうんちをしたダンダーヘッドです
BACK INTO ENGLISH
I'm a dunderhead with poo on my face
INTO JAPANESE
私は私の顔にうんちが付いているdunderheadです
BACK INTO ENGLISH
I am dunderhead with poop on my face
INTO JAPANESE
私は私の顔にうんちをしていて
BACK INTO ENGLISH
I'm pooing on my face
INTO JAPANESE
私は私の顔にうんちしています
BACK INTO ENGLISH
I poop on my face
INTO JAPANESE
私は私の顔をうんちします
BACK INTO ENGLISH
I poop my face
INTO JAPANESE
私は私の顔をうんちします
BACK INTO ENGLISH
I poop my face
That didn't even make that much sense in English.