YOU SAID:

i want to kiss someone on the mouth

INTO JAPANESE

私は口に誰かにキスしたい

BACK INTO ENGLISH

I want to kiss someone in the mouth

INTO JAPANESE

誰かの口にキスをしたい

BACK INTO ENGLISH

I want to kiss someone's mouth

INTO JAPANESE

誰かの口にキスしたい

BACK INTO ENGLISH

I want to kiss someone's mouth