"Lason mong halik" by Katrina Velarde is about the pain of a love that started out seemingly heavenly but turned out to be deceptive, like a "poisonous kiss". The song describes a relationship where the singer was deceived, initially believing her partner's love was perfect, only to find he later became cold and ultimately left her alone and heartbroken. The "poisonous kiss" metaphor signifies that while the beginning was intoxicating and felt like heaven, it was actually harmful, leading to her current pain.