YOU SAID:
my friend eats french fries with his ears and nose and stomach
INTO JAPANESE
私の友人は彼の耳、鼻、胃とフライド ポテトを食べる
BACK INTO ENGLISH
My friend eats his ears, nose, stomach and fries
INTO JAPANESE
私の友人は、彼の耳、鼻、胃、フライド ポテトを食べる
BACK INTO ENGLISH
My friend eats his ears, nose, stomach, and French fries
INTO JAPANESE
私の友人は彼の耳、鼻、胃とフライド ポテトを食べる
BACK INTO ENGLISH
My friend eats his ears, nose, stomach and fries
INTO JAPANESE
私の友人は、彼の耳、鼻、胃、フライド ポテトを食べる
BACK INTO ENGLISH
My friend eats his ears, nose, stomach, and French fries
it is unlikely that this phrase will ever reach equilibrium