YOU SAID:
Muffin is a muffin who likes muffin
INTO JAPANESE
マフィンはマフィン好きのマフィン
BACK INTO ENGLISH
Muffin is a muffin who loves muffins
INTO JAPANESE
マフィンはマフィンが大好きなマフィンです
BACK INTO ENGLISH
Muffin is a muffin who loves muffins
That didn't even make that much sense in English.