YOU SAID:

the man was a little crazy in the head.

INTO JAPANESE

その男は少し頭がおかしかった。

BACK INTO ENGLISH

The man was a little crazy.

INTO JAPANESE

その男はちょっとおかしかった。

BACK INTO ENGLISH

The man was a little strange.

INTO JAPANESE

その男は少し不思議だった。

BACK INTO ENGLISH

The man was a little strange.