Yep, the working class are people who have to sell their labour or bodies to survive.

I guess you could say the smarter ones are selling a fantasy or their image but most of them will actually do what men ask rather than faking it. Like the fart in a jar girl who really changed her diet to produce certain farts and ended up in hospital. A smart business woman would farm that physical work out to multiple employees and just be the face of the operation. That's how you move up into the middle classes (as per the proper definition).