YOU SAID:
おれがちんちんちさいです
INTO JAPANESE
おれがちんちんちさいです
BACK INTO ENGLISH
I'm a small boy
INTO JAPANESE
私は小さな男の子です
BACK INTO ENGLISH
I am a little boy
INTO JAPANESE
私は小さな男の子です
BACK INTO ENGLISH
I am a little boy
That didn't even make that much sense in English.