YOU SAID:

I need to paint my nails and eat some kneecaps

INTO JAPANESE

爪を塗って膝蓋骨を食べる必要があります

BACK INTO ENGLISH

You need to eat nails and patella

INTO JAPANESE

爪と膝蓋骨を食べる必要があります

BACK INTO ENGLISH

Must eat nails and patella

INTO JAPANESE

爪と膝蓋骨を食べなければなりません

BACK INTO ENGLISH

Must eat nails and patella