Alex gave a good answer. It would be helpful if you were more specific about the "idea" that you didn't quite grasp. Which meaning or meanings did you not understand and want to see in context so the community can provide clarity and more focused responses?

Technically morbid means unhealthy such as Morbidly obese She has a morbid fear He is suffering from a morbid health condition It can also be used as unpleasant such as She has a morbid sense of humor