Berate Her Into More Complete Submission

"Be quiet you slut! It is not my problem!" you bark angrily. Her reaction showing you how submissive she is. She is more worried about your parents or a possible child than about herself. That is exactly what you'll use to keep her in control. "Take some pills next time... this sounds like your fucking problem... so deal..."

"Next time...?" She asks with a trembling voice. "Hell yes... We both know that you can't stop fucking me." You answer with a wicked smile

"I hate you! You're fucking insane!"

"I don't really care..." Well maybe you do... but you have crossed the line and you see no other future relations between you and your sister beyond what you established today. You can't say that a chance to **** your sister when there is no one around is a bad thing. "My brother is a monster..." she sobs "Can I go to shower now?"

Your sister's question prompts a brief twitch of excitement in your cock, but it's not ready to go again so soon after filling her cunt with your cum. Instead, another idea comes to mind and you carefully kneel next to her head.

"Not quite yet Katie" You calmly reply, whilst stroking her hair. "Look at what a mess you've made of my cock" Our combined juices give my softened shaft a sticky shine, which Katie looks at with disgust. Before she can voice her objections, however, your fingers pinch her nose shut and grasp her jaw. Her eyes's dart wildly at the sudden interruption to her breathing, before calming slightly as she begins to breath through her mouth. With her mouth open it's a simple job to lower my now slightly revived member between her lips. "Clean my cock Katie. Be a good little slut and lick me clean"

Your position above her gives you complete control. The hot, wet embrace of her lips slides across your cock as you work the now semi-hard shaft into her mouth. Minutes pass as you bask in the pleasure Katie's mouth is giving you.Even without her active involvement, the feel of her mouth and the look on her cute face as your shaft invades it, drawing tears from her eyes, sends a rush of excitement through your system. As you feel your cock swell in her mouth, you pull out and cum on her face and tits as a display of ownership. You then give her permission to go shower, that is: If she agrees to make a video of it for you.