You started just to get the extra cash, but now you mostly do it to get warm and delicious cum customers deposit inside you. Mistress punished you by sticking you inside Gloryhole and customers use you raw. Customers came one by one and fucked you. After many sessions, your ass started hurting. You begged mistress to release you. She agreed but on the condition that you will have to suck the rest of them balls deep. You had no choice. You serviced the rest with your mouth and had a bellyful of cum too.
You left the Gloryhole stinking from all the amazing cum. Don't forget to say thanks to generous Daddies :)