Her mouth AND her pussy

You gesture and the chain slackens, allowing her to slide gratefully to her knees. She simply rests, her weary and scarred arms grateful for the respite. You move around behind her, pulling another set of manacles down, this pair spaced apart by an iron bar. You reach down and yank her ankles backward, dropping her flat on her face. As she kicks out feebly you clasp the manacles around her ankles and haul them up into the air. Soon she hangs upside down in the air, her small tits moving only slightly higher on her chest, her hair streaming beneath her. Another hoist on the chain and her pussy sits a few inches below your eye level, perfectly exposed and almost quivering with apprehension. Her head hangs precisely in front of your crotch, your hardening cock presenting her with an eyeful- very near literally- of her next duty. 

"Need I explain?" She holds her head away and you reach down, picking up her wooden staff. Without warning you lay a firm blow on her tits, then present your lengthy cock again. This time she is hesitant but goes to work, first sliding her tongue down the shaft, then pulling it back up to run it over the head. The position is unorthodox, but given the considerable likelihood that she's never given head in ANY position, you expect her to prove as good as any newcomer despite the unusual style. She soon does, another rap across her lovely ass providing further encouragement. 

You turn your attentions to her pussy, sitting conveniently just in front of your face. You run your hands down (up) her back to her ass and cup it, her lovely skin like honey under your touch. Pulling her in to your body, you run your tongue along the inside of her thigh, her body shuddering at the invasion of her dignity. Her shaking gets worse as your tongue moves lower and she stops her oral servicing. After a slap to the ass she suddenly stops her shaking and resumes, almost more energetically than before, as though hurrying to bring you to climax before you can do anything else to her. Your control over yourself, though, is almost as complete as your control over her. You run your tongue to the top of her slit and flick the tip of it in and out of her. She twists, fighting the teasing almost-sensation, trying fruitlessly to pull herself away. You move your attentions to her clitoris, tickling around the outside of it as your hands tighten, massaging her ass with your fingers. Her attention has really focused on your cock and you find it harder and harder to resist your body's urges as her eagerness proves almost overwhelming. Your tongue slithers over and around her clit and she squeals with surprise and anxiety, the tension it brings to her mouth pushing you to the edge. Finally you thrust your tongue deep into her, surprised to discover that she's damp herself, even as you pump your seed out onto her breasts, neck, and face. You push your tongue in again and again, tasting her salty tang. Her body bucks as she tries to pull away from you, but you grip her ass tighter and catch her clit in your teeth, nipping at it and pulling it until she gasps a final time in pain and **** pleasure. Finally you lower her to the floor again, rolling her onto her back to keep her cum-covered chest off the ground. You return her to the arm-shackles and hoist her off the floor again. As her feet come off the ground until only her toes touch, you grasp her head in your hand and kiss her forcefully on the mouth, shoving your tongue and the taste of her own juices into her mouth, reminding her of just how much her body enjoyed it.