The term 'Regular Gal or Guy' can be summarized as a habitue, which is a person who frequents a particular place or establishment. This term is often used to describe someone who is a regular customer or visitor of a certain place, such as a restaurant, bar, or store. A habitue is someone who is familiar with the environment and is comfortable in it. They are often seen as a part of the community and are well-known by the staff and other customers.