"Unacceptable sexual context"

What exactly is unacceptable?  Please be specific.

Is it unacceptable because there's a sexual connotation at all?
Is it unacceptable for a man to want sex?
Is it unacceptable for a man to offer sex?
Is it unacceptable for a woman to remain vague regarding her intentions?
Is it unacceptable for a woman to understand the mans intention, and purposely be contradictory and confusing regarding her own intentions? (That may be a loaded question)