not slutty enough.

'Doctor - Vina is here to see you.'

It was three days after Dr Derriere had introduced Vina to the world of submission, as befitted her Asian heritage. She had done well in accepting the doctors diagnosis. She walked in wearing a short denim skirt and bralet top. She clearly wasn't wearing a bra. Definitely pretty slutty, as he had prescribed.

'Vina, why do you look so sad,' he asked as she sat down, then he noticed she was wearing panties. 'Before you answer that Vina, I asked you to dress slutily for me, but you're clearly wearing panties. Sluts do not wear panties. Take them off.' He held out his hand. For a second he thought she wasn't going to comply but then she stood, wriggled out of a tiny thong, and handed it over. 'That's better, sit down. Now what is the problem?'

'My boyfriend didn't want to fuck my ass. He put his finger up there, but he didn't seem to particularly like taking the lead. I've broken up with him. Before I hook up with anyone else can you fuck me in the ass, so I know what it feels like.'

'Of course. Come here. Kneel' He pointed to the floor next to his desk, and motioned for her to open her mouth. He stood, came out from behind his desk and unzipped his fly. He placed his cock on her outstretched tongue, and she began to lick it slowly. She went to put her hands on it, but he stopped her and placed them behind her back. He grabbed her head and started fucking her face. She was definitely a natural - he loved it when his diagnosis was spot on. After a couple of minutes he pulled her up and made her kneel on the chair, pulling down her skirt. He made her continue to suck his cock, but now her ass was in the air, and he could finger her little brown hole whilst she lubed him. He moistened his fingers in her sopping wet pussy and was able to get two finger deep into her rectum. Vina moaned and tried to say something but he just kept thursting into her mouth. It was time.

He stood behind her and spat on her bum hole, spreading it with the tip of his cock. He pushed her head right over the back of the chair to get her ass at the optimum height for him, then pushed against her sphincter, 'Push out,' he ordered. She gasped as the tip of his rigid cock opened her sphincter, but she pushed back against him, and he pushed deep into her, until she gave a little scream. He said nothing. He slowly started to fuck her ass, revelling in how large his cock looked in her brown asian teenage bottom. He grabbed her hands and put them on her ass cheeks, and she obliged by opening herself up a little more. He was in a good rhythm now, getting almost balls deep with every thrust. He didn't want to come too soon, so mixed it up by fucking her with just his cock tip for a while, rapidly, then reverting to fucking deep and slow. Occasionally he just stayed still, deep inside her ass, and stroked her back, pushing as deep into her as he could. She took it all, even though he knew she found it uncomfortable. He pulled out and gaped her ass, roughly pulling her ass cheeks apart. 'Good girl,' he said as it winked at him. He played with her ass for a while, fucking her hard and deep for a few seconds, then gaping her. He took some photos on his phone to show her later, and for his own collection. Her pussy was dripping wet. 'I can tell that you like getting used like a whore Vina. Now, let's see how much you can take, shall we?'

He re-entered her ass, and took hold of her hands pinning them behind her back with one hand, and grabbing her hair with the other. Then he started to fuck her properly, like he was in her pussy. His balls were slapping against her pussy with each thrust, he could feel her sticky juices on his sack. He put one foot up on the chair to get more purchase and slightly change the angle, meaning he could get a tiny bit deeper in her ass. 'I'm gonna cum Doctor!' she shouted out, and then she started spasming uncontrollably - probably a good job the doctor was holding on to her really. He slowed down whilst she finished her orgasm, he ass gripping him even tighter, and then sped up again, building up to his own climax. He came deep inside her ass, letting go of her hair and hands to steady himself. Vina gleefully used a hand on her clit and frigged herself frantically whilst he was still pumping her with cum. She continued to do this as she licked his cock clean. 'It's incredibly important that you take cock direct from ass to mouth Vina, nothing is more submissive.' She nodded, licking her lips.

'I'm going to keep your panties Vina, ok. If you need to make a further appointment please do. I would estimate that you need a good anal fucking at least twice a week, so if you can't find a man to do that, just come and see me, it really is medically advisable.'