There's no live human nudity. Views of breasts are seen in a painting and on a statue, and male genitals on a statue at a distance, for a second or so each. A man changing clothes is seen for a short while in underpants tight enough to obviously bulge.
A woman sits on a man's lap and attempts with non-explicit conversation to seduce him.
There's a brief reference to pornographic movies, and quick view of X-rated movie marquees. A person looks at a Penthouse magazine and is surprised by the content, but we don't see it. A telephone conversation includes a very discreet implication of male gay attraction.