Have you ever experienced this? I consider this a semi-ROB tactic as i understand fully why they do this. By distracting you with often unrelated conversation (and hoping that you bite and engage with them also) while doing a dance, you aren't as focused on doing what you really want to do. And because you are dividing your attention, the song will go by a lot quicker and seem shorter, so you can easily be persuaded to do another song.
Now, i'm not talking about talking dirty in your ear while you're getting it on (for all the LDKers out there, or even just the heavy grind fans). Or girls that tell you exactly what they like about what you're doing, or what they want you to do or what they want to do to you (which is technically also dirty talk and usually just talk, as they're probably not going to follow through, but sometimes...). This can and actually often does add to the experience. No, i'm talking about the incessant rambling that often has nothing to do with what's going on during the dance. When a girl starts doing that, i know it's almost always one and done for her and i shut it down by not saying a peep the entire time or i'll just ignore her and say something completely different from what she's asking (like "nice tits" or "show me your pussy") so she knows i'm not paying attention to a word she is saying, and sometimes a dance like this can be salvaged.
ROB tactic? I disagree.
Some guys like it. If you don't, and I'm not a fan of it either, stop after one dance.