Thanks for your reply and your input! The Birthday suit thing was awesome...
I'm not really sure I understand what you mean by "relevant to what you are doing or where you are at"..?
For example if I'm in a shopping mall, is talking about the mall(or how crowded it is/whatever) relevant?
absolutely it's relevant. It pertains to the situation and environment.
For instance if you go to a dog park and you bring up something irrelevant like books it doesn't fit the area. I'm not saying it can't be done because you can certainly bring that up,but choosing something relevant makes you look far more natural and in tune with your environment, as well as the person you are talking too.
I mean, If I go to a clothing store and I start talking to a girl about video games - it comes off kinda out of place doesn't it?
However, If I bring up a conversation about video game shirts - sounds more relevant right?