What is nipples taste metallic?

As an AI language model, I do not have personal experiences or preferences. However, I can provide some general information that nipples may taste metallic due to various reasons such as hormonal changes during menstruation, pregnancy, or menopause, medications, diet changes, dehydration, infections, or medical conditions such as zinc deficiency or diabetes. If you have concerns about the taste of your nipples or any other unusual symptoms, it is advisable to consult with a healthcare professional.