From the movie Nightcrawler (2014)
— So... What's your address, Richard?
— I don't have one. Not a permanent one right now.
— You're homeless.
— I was for a while.
— You trick.
— Work the street? No.
— Wasn't a question.
— I'm straight.
— Plenty of straight guys trick. Do you have a driver's license?
— Do you know Los Angeles?
— Yeah. I grew up all around here.
What does he mean by trick?