It's been a problem for me recently, I talk to someone and we reach a point where I don't know how to respond. So I end up answering with one word, such as "cool" or "uhuh" etc. I hate this. I sound disinterested, rejective and just plain rude, and often it's with people I like talking to. It's happened on this site as well, someone pm's me, and I dunno what to say. I want to say something, but my brain stops working. Any suggestions?