> > sexual impression have bad reason why everyone be feel ashamed, therefore I take care of my behavior.
>                                                  ^^いらない

whatでも(´ωﾟ)代用できる(´ωﾟ)代名詞はreasonだけに係るのではなくて(´ωﾟ)bad reasonに係っている
sexual impression have bad reason why everyone feel ashamed, therefore I take care of my behavior.
                       ^^^^^^^^^^ ←  ^^^^^^^^^^^^^^^^^^^^^
sexual impression have bad thing what everyone feel ashamed, therefore I take care of my behavior.
                       ^^^^^^^^^  ←  ^^^^^^^^^^^^^^^^^^^^^

もっと正確に表現すると(´ωﾟ)関係代名詞の後にisを追加する必要がある
bad reason is everyone feel ashamed(´ωﾟ)bad thing is everyone feel ashamed(´ωﾟ)だからね
sexual impression have bad reason why is everyone feel ashamed, therefore I take care of my behavior.
sexual impression have bad thing what is everyone feel ashamed, therefore I take care of my behavior.

代名詞の後にisを使用するのが嫌な場合は(´ωﾟ)以下
<ケース１>
sexual impression have bad reason why feel ashamed to everyone, therefore I take care of my behavior.
sexual impression have bad thing what feel ashamed to everyone, therefore I take care of my behavior.
<ケース２>
sexual impression have bad reason why make feeling ashamed to everyone, therefore I take care of my behavior.
sexual impression have bad thing what make feeling ashamed to everyone, therefore I take care of my behavior.
<ケース３>
sexual impression have bad reason why let everyone feel ashamed, therefore I take care of my behavior.
sexual impression have bad thing what let everyone feel ashamed, therefore I take care of my behavior.

参考：2009/11/18(水)01時11分36秒