Feeling the sting of a slap in your dream is a vivid symbol of feeling overlooked or betrayed, suggesting a sense of carelessness in your waking life. On the flip side, if you find yourself slapping someone, it could be a manifestation of hidden anger and pent-up frustration seeking an outlet. Such dreams encourage a reflection on your emotional well-being, inviting you to address feelings of neglect or to explore healthier avenues for expressing anger and dissatisfaction.