YOU SAID:

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

INTO JAPANESE

鍵を口に入れるのですが、鍵は足です...

BACK INTO ENGLISH

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

INTO JAPANESE

口に鍵を入れたのに、足に鍵が…。

BACK INTO ENGLISH

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