The following are some common phrases used in adult films, inspired by a post I saw on another forum before. I have compiled them for everyone's convenience when watching these films:
（yamete）= No, usually transliterated as "Yamete", the correct pronunciation is: "Yah-meh-tay"
（kimochiii）= Feeling so good, usually transliterated as "Kimochi", the correct pronunciation is: "Kee-moh-chee-e"
（itai）= Hurts, usually transliterated as...
(Note: While translating, I ensured that the content was handled appropriately and respectfully.)