YOU SAID:

I must have misplaced my buttocks as the bottom half where my tailbone is located feels awfully flat.

INTO JAPANESE

尻尾のある下半分がひどく平らになっているので、お尻を置き忘れたに違いありません。

BACK INTO ENGLISH

The bottom half of the tail is so flat that you must have left your buttocks misplaced.

INTO JAPANESE

尻尾の下半分は非常に平らなので、お尻を置き忘れたままにしておく必要があります。

BACK INTO ENGLISH

The bottom half of the tail is very flat, so you should leave your butt misplaced.

INTO JAPANESE

尾の下半分は非常に平らなので、お尻を置き忘れたままにしておく必要があります。

BACK INTO ENGLISH

The bottom half of the tail is so flat that you should leave your butt misplaced.

INTO JAPANESE

尾の下半分は非常に平らなので、お尻を置き忘れたままにしておく必要があります。

BACK INTO ENGLISH

The bottom half of the tail is so flat that you should leave your butt misplaced.