YOU SAID:
I walked and ran and did a funny dance
INTO JAPANESE
私は、歩いて走ったし、面白いダンスをしました
BACK INTO ENGLISH
I walked, ran and did a funny dance
INTO JAPANESE
私は歩いて、走って、面白いダンスをしました
BACK INTO ENGLISH
I walked, ran and did a funny dance
That didn't even make that much sense in English.