Thanks for reading. I'd just like to point out that if you're thinking of something clever to say, you're already trying to impress them, i.e with your cleverness. If you don't know what to talk about, consider whether that mental block is because you're concerned about what the person will think of the topic, whether the person will engage in conversation, or the impression they'll have of you. If the answer is yes to any of those, then you don't see them as equal value, otherwise you wouldn't be concerned. If you see someone as equal value, finding something to talk about and not be concerned about the outcome will be easier than if you saw them as higher value. Say you met someone larger than a hippopotamus, with hair filthier than soiled toilet paper, and smelt worse than sewerage from phuket; but was a nice person and started talking to you, you're less likely to be concerned about the topics of conversation. Extreme example, I know, but it gives perspective. Check out Richard La Ruina (The Gambler) on youtube, you'll pick up some solid conversation ideas and techniques.