what does a Call-Girl do?

[PiKA2001]

So I was at the bar tuesday night waiting for some friends to come up when I met this one girl. I was talking to her for a while just to pass the time( hoping my friends would come soon) She was a cool girl, she goes to the same school as me and shes lives in the same area. She ended up giving me her number that night ( I never asked for it she just gave it to me) and told me to give her a call sometime so we could "party". I told her that I would give her a call on a monday or tues because I have to work weekends. She told me she has no weekends off cuz she works as a CallGirl downtown. I'm not sure what a callgirl is but I think it might be a cocktail waitress or a shotgirl or something, which is cool because i'm a bartender. I'm kind of wary about girls that seem really interested in me, so I think I may just "lose" her phone number.