To dream that you are laughing, denotes that you will be surrounded by pleasant companions and much success in your endeavors.

To dream that you are laughing at others, denotes that you will intentionally harm others in order to advance your own desires.

To hear the cheerful laughter of children, denotes splendid joy and vital health.

To hear evil, demonic laughing in your dream, represents feelings of humiliation and/or helplessness.