If I am calling a male student, frequently his girlfriend or wife will answer the phone. When this happens, often there is a note of suspicion, or one of those damn sicky-sweet "May I ask who's calling?"
Women of the world: I have no desire to sleep with your husbands (well, unless you're married to Alan Rickman). I am not hitting on your husband. In case you haven't noticed, 51% of the world's population is female, and a lot of us have jobs. In fact, I resent the implication that I am anything other than professional. Women will have to talk to your man. Deal with it, and get over yourselves.