Unbiblical Sexual Ethics: Ruth

The story of Ruth is one of a handful of female heros in the Bible.

Stop and think for a moment about the advice that mother-in-law Naomi gave to Ruth.

“Now Boaz, with whose women you have worked, is a relative of ours. Tonight he will be winnowing barley on the threshing floor. Wash, put on perfume, and get dressed in your best clothes. Then go down to the threshing floor, but don’t let him know you are there until he has finished eating and drinking. When he lies down, note the place where he is lying. Then go and uncover his “feet” and lie down. He will tell you what to do.” (Ruth 3:2-7 NET)

There is great debate that "feet" in the Bible can sometimes be a euphemism for other body parts they didn't want to speak about.

Meanings of Feet:

2 Kings 18:27 and Isaiah 36:12: "the water of their feet" gets translated "their own piss" http://biblehub.com/2_kings/18-27.htm
Ezekiel 16:25: "opened your feet" gets translated "spread your legs". (Compare KJV or Youngs Literal translation with NIV or others)
Isaiah 7:20: "the hair of the feet" gets translated "the pubic hair". (Compare KJV or Youngs Literal translation with NIV or others)
2 Samuel 11:1-11 David tells Uriah to go home and "wash his feet". He likely already washed his feet before coming into the kings palace. Uriah replies that he doesn't want to lie with his wife.

It is debatable what "uncovering his feet" could mean here, and what directions Boaz was expected to give after she uncovered his "feet".

Even if the feet were just feet, I'm not sure what Naomi was thinking giving this advice to a young girl. Go sneak into the tent of an older married man who had just finished having a few drinks, and see what happens. Do whatever the (drunk?) old man says to do.

Why didn't Naomi tell Ruth to approach him in the daylight in a public place with some fresh baking instead?