YOU SAID:

to place the key in ones mouth, but the mouth is the foot...

INTO JAPANESE

鍵を口に入れるのですが、口は足です...

BACK INTO ENGLISH

I put the key in my mouth, but my mouth is my foot...

INTO JAPANESE

鍵を口に入れたのに、口が足になってしまう・・・。

BACK INTO ENGLISH

Even though I put the key in my mouth, my mouth turns into a foot...

INTO JAPANESE

鍵を口に入れても口が足になってしまう…。

BACK INTO ENGLISH

Even if you put the key in your mouth, your mouth becomes your feet.

INTO JAPANESE

鍵を口にくわえても口が足になってしまいます。

BACK INTO ENGLISH

Even if you put the key in your mouth, your mouth becomes your feet.