Dream about being a foster child is an omen for your acceptance of each other. You are mocking someone. You need to pace yourself in some situation. The dream is a premonition for your desire to fix a situation or relationship. Perhaps you need to incorporate aspects of a person into your own character.
Being a foster child dream signifies something in your life that you feel at fault. Some aspect of yourself or your life needs updating. You are being worn down. It is about your insecurities and self-esteem issues. Perhaps you feel someone is giving you the runaround.
If you dreamt about being a foster child:
You are anxious to get a certain project underway but tremendous conflict exists with regard to how the project should get started. It is important for you to take extra time in these first stages. Otherwise, you will regret your haste later on.