A person who maintains the people in their lives in order to gain something/anything free or of little or no cost to them. They get by saying their marks are their friends, but in private they call them options. Some may even rely on the mall, public places, or parents for free necessities such as heat, air conditioning, water, food, paper products like toilet paper and paper towels etc. A mooch. They also like mates who wait on them hand and foot well, that is, when there isn't a more profitable option. Open hand and closed heart. It is just a matter of what you put your mind to.