Asking a girl out

hey I sort of met this girl on the bus when I was riding it on my way to class last month and she seemed pretty cool. I saw her again a couple of weeks ago working at a store at a popular shopping center. How do I get her number? Should I just be direct and go to her work and ask?

Number, asking, meeting grlz?
WTF!
Just push her over when she's in an ally and stick it strait in er' Poopa!

Say, "Is that a mirror in your pocket? Cuz I can see myself in your pants!"