Kurlansky claims the romans used salted eyed the way we use (or used to use, since i haven't heard the term used in years!)"sheep eyed" to mean well, what salacious means! there is a good deal of evidence that salt is associated with sexual prowess, and success.. and general over all good health and stamina.

I always thought salty language, salty talk, was derived from the, uh, colorful and lusty language that sailors and seamen (salts, old salts) were known to employ throughout the centuries. But this Roman facet to the story is intriguing.