YOU SAID:
when going on a kneecap stealing extravaganza, one must first properly prepare the vessel used for storage of said knee caps
INTO JAPANESE
膝蓋骨を盗む派手な行事に参加するときは、まず膝蓋骨の保管に使用する容器を適切に準備しなければなりません
BACK INTO ENGLISH
When participating in a patella stealing extravaganza, you must first properly prepare the container used to store the patella
INTO JAPANESE
膝蓋骨盗みの祭典に参加するときは、まず膝蓋骨を保管する容器を適切に準備する必要があります
BACK INTO ENGLISH
When participating in a patella-stealing extravaganza, you must first properly prepare the container in which you will store your patellas
INTO JAPANESE
膝蓋骨を盗む祭典に参加するときは、まず膝蓋骨を保管する容器を適切に準備する必要があります
BACK INTO ENGLISH
When participating in a patella-stealing festival, you must first properly prepare the container in which you will store your patellas
INTO JAPANESE
膝蓋骨盗み祭りに参加するときは、まず膝蓋骨を保管する容器を適切に準備する必要があります
BACK INTO ENGLISH
When participating in the patella stealing fest, you must first properly prepare the container to store the patella
INTO JAPANESE
膝蓋骨盗み祭りに参加するときは、まず膝蓋骨を保管する容器を適切に準備する必要があります
BACK INTO ENGLISH
When participating in the patella stealing fest, you must first properly prepare the container to store the patella
That didn't even make that much sense in English.