re: the word "foot" because it was unmentionable in Roman society.

thanks dr. bill-- i was thinking about this.. a work friend from years ago was also a biblical scholar and she mentioned that nakedness, and adultry are almost never mentioned directly in the bible, but rather, it would be mentioned that some one had exposed their foot. and this was the short hand for indecent behaviour.. any one else know anything about this? or chapter or verse about playing footsie in the bible?
i wonder if this was why.. and did the biblical scholars pick it up from Roman customs, or did the romans pick it up from the bible...