[starts to drop pants] oh- i'm sorry. I didn't realize you weren't offering.
I hate seeing us guys having to do it all the time. If any guy ever tell you they weren't nervous about going up to girls at least at some point in their lives, they're lying, so it's not just you. But, I think finding some common topic to talk about helps break the ice quickly. Something simple, like books, or shows. Usually the place you're at can help give you ideas.