Helga performs a magic ritual with you

Helga bends over beside the bed, giving you a look at her fat, white bum and the backs of her thighs slicked with juices. She's leaning over her discarded clothing, rummaging around in the pockets of her peasant skirt.

"I would bury my fingers up your little cunt, or my tongue up your ass," says Helga, looking over her shoulder at you. "But a whore of your skill requires something much greater to satisfy her. I can see it in your blushing cheeks. Ah-ha, here we are!"

She turns back around, big tits and fat nipples dangling, but your eyes are drawn to the silver in her hand. A knife!

"No," you cry. "Please!"

"Be silent," she hisses and grabs hold of your breast roughly.

You stifle a cry as she comes at you, dragging the blade's edge quickly along the side of your breast. You gasp in pain and arch your body against your bonds. It is only a scratch, but it produces a stinging line of blood. Helga gathers the scarlet jewels of your blood on her fat fingertip.

"This calls for blood and I'm not going to shed my own," says Helga. Your breathing is slowly returning to normal. As you watch, Helga draws a symbol on her white belly above her thatch of pubic hair. You don't recognize the symbol, but it seems carefully drawn. "Now you must help me with the ritual."

"What?" you are terrifed again. You have heard of black magic and this woman is dealing in blood. She is a bitch, for certain, but now it seems she is also a witch.

"Don't be foolish," says Helga and she climbs onto the bed on her knees beside you. "It is simple. I will smother you beneath my ass and you will be a good whore and put your tongue between my cheeks. With your talents I am sure the ritual will be short. You need only make me cum while I use my fingers and say the words."

"What? Why? Wait...no! Don't! Stop!" your cries are smothered as Helga climbs atop you and her big, pale arse blocks out your view.

You get a scent of her sweaty crack and the familiar musk of her quim and then her soft cheeks are pressing down, her warm crack opening against your nose and mouth, surrounding you. You can feel the heat of her arsehole nearly against your lips and to breathe you must inhale the strong smell of her body.

"Begin," shouts Helga and she presses down even harder causing you to cry out.

Muffled by her bulk, you can hear her beginning to quietly chain and can feel her fingers hitting your chin as she massages your cunt. You wet your lips and try to breathe, quickly realizing that the only way to keep from suffocating is to lick Helga's arse. During private training sessions at Paisley you've enjoyed more than one dominated monster's tongue up your lovely bottom, you know how amazing it can feel, but never have you been subjected to this humiliating act yourself.

Struggling to breathe, you make your mind, extending your tongue between the valley of Helga's bum and seeking out the hot wrinkle of her arsehole. It's fleshy and slightly bitter-tasting against the tip of your tongue. You prod it and it tenses. Helga's moan of pleasure travels through her thick body and reaches you as a vibration in her cheeks. You lick again, this time swirling your tongue around the rim of her squirming wrinkle. She responds by moving her hips and massaging her quim more vigorously. Gasping for breath from the hot, stale air of her crack, you intensify your licking and beginning screwing the tip of your tongue into the hot divot of her arse.

Helga's chanting rises in pitch and volume, her pleasure also communicated by the increased grinding of her bottom into your face. You drive your tongue hard into her arse, at last overcoming her clenching muscles and penetrating the hotness, licking out her nasty hole as she rides your face. It's humiliating, and the smothering is frightening, but you give it your all and begin to enjoy it, your tongue fucking in and out of her spit-slicked hole.

At last you hear her cry above you and you feel the muscles in her ass squeezing your tongue and a pronounced wetness on your chin and throat. Then you feel something unexpected. A heavy thump as something big and fleshy lands on your chest. Helga rises from your red, sweat-soaked face, her ass and thighs quaking. She climbs unsteadily off the bed and turns, a devilish smile on her face.

"Here is your reward," she says and you nearly scream at what you see. Extending from the top of her vulva, right where her clit would normal be, is a huge, fleshy cock. It is oddly-colored, almost purple, with thick veins reaching up a good ten-inch length. It is also as thick as your wrist, the head very fat and dripping with liquid. "Isn't it lovely? The dark lord has given it to me until the dawn. Now you will know what it means to be fucked by a devil's cock."

She unties you from the bed and you do not immediately move. You are torn by fear and debased lust. You search for the will to fight off Helga even as this new "reward" stokes your desires.