I made a noncommittal noise because I didn't want to talk about it anymore, because it doesn't matter. And you responded with - whether you want it to be or not - was a total non sequitur. If you had said, say, "They won't fire me because of my dedication to justice," I could have understood that. Instead, you fired off a seemingly random noun and deemed it sufficient. You might as well have said cornstalk or balloon or fish for all the sense that made in context.