What to talk about?

Start with something funny,and the ball will roll its self from there if you're a naturally comedic dude.
If y'all start smalltalk, hit her with the "do what colours your toothbrush?" lmao it sounds like a joke, and it is. It gets everyone laughing
Other than that.... Nobody really likes smalltalk.... Lets be real.... Think of something interesting or get to know her. The best ways that I can think of are stories. That's what I usually do and it works wonders.