Bring your best pocketful of Mom's spaghetti. Let it spill at every opportunity.
♪Knees weak, arms are heavy
There's vomit on his sweater already
Mom's spaghetti♪
Real talk though, don't make a big deal out of it. As of right this moment you're two good people hanging out doing things that two good people do, friend stuff. Don't go into it with the expectation of making her your girlfriend, just have a good time. Get her to laugh. Make her smile. Don't be rude, don't say cunt or bitch and keep other profanity to a minimum.
I am fucking -terrible- with women, and last week I went on a date with a chick from work and did exactly what I said. She wants to go on another one now.
Sicklyboy: 1
The other guy from work: 0
Take that social awkwardness.
Serious though. Just be cool about it. Wear a little extra deoderant, don't want any sweat pouring through. A little spray of a good cologne can work wonders too.