YOU SAID:

my bumcheeks are large and fun

INTO JAPANESE

私のbumcheeksは大きくて楽しいです

BACK INTO ENGLISH

My bum cheeks are big and fun

INTO JAPANESE

お尻の頬が大きくて楽しい

BACK INTO ENGLISH

Big cheeks on the butt and fun

INTO JAPANESE

お尻に大きな頬と楽しい

BACK INTO ENGLISH

Big cheeks on the butt and fun