Having a fling is a term that refers to a short-lived romantic or sexual relationship. There are many different synonyms for the phrase "hath a fling," including having a casual affair, engaging in a short-term fling, or having a fleeting romance. Other phrases that can be used to describe this type of relationship include having a one-night stand, being involved in a casual hookup, or indulging in a brief affair. While these terms all describe similar types of relationships, they are each used slightly differently and may carry different connotations or levels of seriousness. Regardless of how you describe it, having a fling can be a fun and exciting experience for some people, while for others it can be a more complicated and challenging experience.