How did this first date go?? What now?

Totally defense, but some people are naturally sarcastic like that. It could be that she is smarter about men. About the Now what part; it depends. Get to know her, don't get too physical too fast. That clouds your judgement, and hers. See if she truly is sarcastic or if its a defense mechanism, and ask yourself NOW, (not later in time) which one of those you would prefer in a woman. The one who is truly sarcastic, and independent, or the one that is sarcastic up front, but kind and softer with her emotions towards you. I personally can't do sarcastic guys; they all seem like they were sarcastic because of some insecurity or other; but I can't do a needy one either. I like the man who calls me out on something like when I am missing the logic in something. Good luck ;)