For example if A and B wanted to go out that night; and A wanted to go to the movies, but B wanted to go dancing, the following conversation is possible:
A: I'd prefer the movies, but I'm willing to hear your case for dancing.
B: Okay, we both need exercise, and we went to the movies last time. Do you have a good case for the movies?
A: Well, I can make a very good case for not going dancing. I fell over today and sprained my ankle.
It's not used so often in informal contexts like this, but that is the meaning.
- For Teachers