Incest Dream Meaning
If the dream relates to real-life events then you may consider seeking professional advice or counseling. For a man, to dream of incest with a daughter symbolically expresses a fear of secret erotic desires. Incest with a sister or brother can represent the union of masculine and feminine sides of the dreamer. For a man, to dream of incest with his mother represents the desire he may have had for her as a small boy (see Mother) and likewise a woman’s dreams of incest with her father represent her infantile desires. (see Father)
The subject was so taboo that ancient dream books made no comment about these dreams.