[youtube]
http://www.youtube.com/watch?v=kClz8Ld9084[/youtube]
Fouseytube proves that what you say doesn't matter. Sometimes all you need to do is actually just talk to girls even if you're awkward as fuck.
Now, why do these girls actually give him their numbers? Because, even though he's pretending to be all awkward, he's clearly showing that he's got the balls to do this weird shit. And balls are attractive.
The one thing he's showing is a lack of hesitation. So, no matter how badly you think you're going to screw up, lose the hesitation and you'll probably do even better than this guy.