Incest in a dream can represent anything that is taboo.
A dream that you are committing incest can mean that you are thinking about taking part in an activity that society views as forbidden; you want to break boundaries.
You want to be in control of your own behavior and not be forced to conform to the rules of society.
Dreams about incest can mean that you are confused about the roles that you play in life. You are unsure about your self image or about how you are expected to behave in different situations.
A dream that your or someone you know is committing incest can mean that you feel that a real life relationship that you have is unhealthy or dangerous.
If you dream that a family member suggests that you take part in an incestuous act, you may be afraid that you are taking on some of their negative qualities.