I'm in Telemarketing

What a prostitute says she does for a living to someone she is trying to date. Hence the term "call girl" (She's really telemarketing that azz!)

Ryan: So what do you do for a living?
Krystall: Oh I'm in telemarketing.
Ryan: Wow! Miss independent! hehe! I'm wanna take you home to meet the parents!

(Later while on Facebook looking at Krystall's profile)
"Wow look at those stacks of Benjamin's all over her floor, she must make good money at that telemarketing job," Ryan thought to himself.