YOU SAID:

Do you kiss your mother with that mouth?

INTO JAPANESE

その口でお母さんはキス?

BACK INTO ENGLISH

Kiss mother with that mouth?

INTO JAPANESE

その口でキスの母?

BACK INTO ENGLISH

Its mouth is kissing my mother?

INTO JAPANESE

その口は私の母にキスか。

BACK INTO ENGLISH

Its mouth is kissing my mother?