YOU SAID:
he's bouncing on my booty cheeks
INTO JAPANESE
彼は私の尻の頬で跳ねている
BACK INTO ENGLISH
he's bouncing on my ass cheeks
INTO JAPANESE
彼は私の尻の頬で跳ねている
BACK INTO ENGLISH
he's bouncing on my ass cheeks
That didn't even make that much sense in English.