Let that be a warning against making small talk with inconsequential NPCs. You might tick off the GM by paying attention to stuff that has no background other than being there just as scenery.

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Transcript

Luke: So... tough moisture farming season, huh?
Ponda Baba: You talkin' to me?
Luke: Er...
Ponda Baba: I don't see no one else here, you must be talkin' to me.
Luke: Yes?
Ponda Baba: You see, when someone takes the mickey—to my face—I want to make sure they're talkin' to me. Before I take offence, like.
Doctor Evazan: Whoa, whoa. Who's this kid?
Ponda Baba: Tells me some nonsense about moisture farming.
Doctor Evazan: Holy snap. You can't just take that.
Ponda Baba: Well, I wasn't gonna.
Luke: Uh... but I really am a moisture farmer.
Ponda Baba: Look, he's saying it again. To my face, even.
Doctor Evazan: He wants to die. He's terminally ill and wants to be put out of his misery. That's the only explanation.
{beat}
Luke: So... I don't suppose you have any blue milk?
Ponda Baba: Wooooooow. You sicken me. I'm gonna mail your body parts to twelve systems.
Luke: I'll... be careful.
Doctor Evazan: You'll be dead!