Okay, I have a guilty confession to make. Sometimes I go to a coffee shop and sit down just to hear other people's conversations. Yeah, I know, that makes me an eavesdropper, but I love listening to real conversations and seeing how people speak (and perhaps pick up some interesting tidbits that could later be used to fuel my ideas).
But, isn't this one way to help create realistic dialogue? If you don't listen to people and watch how they act, how does the writer know they are creating realistic characters? That's my argument and I'm sticking with it.
Don't tell me I'm the only one who does this. Who else loves to catch bits of conversation? Who out there catches sight of someone (whether it's what they say, what they wear or how they look) and thinks that they could use that quirk in their stories?