When you have a hunch, you have a slight impression or premonition about something which may happen. We sometimes say, "listen to your hunches" (or more commonly "listen to your gut", as in "gut feeling"). Your phrase has reversed the analogy quite nicely: if we can listen to a hunch, then a hunch must be able to "talk" somehow. :)

It's another way to say "That was a lucky guess" or "That was a lucky call", when someone predicts something that's going to happen and then it does.

Hey ya. That's a hunch talking which can be referred to something like a prediction that was made. Indeed sometimes it's a fact that we're fairly impulsive to jump to any conclusions on the slightest evidences. I hope it helps, thank you so much.