What are the rules for boomerang children?

See below: There are no specific rules. Each situation is different. And the rules/expectations need to be discussed between the parent(s) and the returning child.

Set them early: You may need counseling to gain the skill-set needed to do it in adulthood. You get the kids you raise, and if they come back expecting you to give them a free ride, they got the idea from you. A third party can help you design and enact a transition to change things without blowing up the family.