A more polite way of saying "slut"; remember that a whore gets paid while a slut does the same work for free.
From SNL parody of Girls:
Jessa: I had sex with a cab driver, alright? It's called being free.
Blerta: You are prostitute?
Jessa: No, it's not prostitution if you don't get paid.
Blerta: You are UNPAID prostitute?!? You are lower than dog!
Son: why is she so happy?
Dad: because she's a true humanitarian a unpaid porn star! respect it!
Mom: yes shes angel!
Sister: why are we all watching porn? Lol
An offence which can lead to legal action being taken if not payed off. Not being in the financial situation to pay off Child Support bills would also mean not being able to pay the court the right amount of moolah. Self-explanatory stuff Karen!