I think you have led a rather sheltered life Greg? Do you think that many women "enjoy" banter sexual and otherwise? Have you ever been in women's work environment? Hen nights etc?
Alcohol has the same effect on men and women, it banishes inhibitions.

Sexual banter is part of the mating game, but it is the responsibility of those who participate to draw whatever line is appropriate to them.
Regarding sex in the workplace, it can be used by both sexes, some to advance their careers, others to abuse their power.

Mostly it is about giving "signals" and waiting for responses.