"Lick My Pussy"

"I want you to take off my panties and lick my pussy" she says, in a strong, demanding voice. "Do you understand me?"
"Yes, Auntie Helen." you say, dropping to your knees in front of her. She spreads her legs and pulls her sensible, knee-length skirt up to above her hips. You pull her lacy white panties to one side and push your head between her thighs, burying your tongue into her sopping wet hole as far as it will go.

"OH! oh, yes, that's right, please your Aunt Helen, mmm, yes, lick my clit, yeees!" she cries out as you flick your tongue along the line of her pussy and then flicker it over her erect clit. Even in human-like form, you know she's already infected with the Lilith Strain, but this has become about more than simple infection. You want this woman's soul.

Pushing your tongue back into her pussy, you allow it to momentarily extend to its full length, eliciting a loud gasp from Helen. She pants as her left hand kneads her breasts and her right grips the chair with such **** that her knuckles have turned white. Having swirled your supernatural tongue in her cunt for a few moments, you retract it and suck her clit in between your teeth. Her entire lower body convulses as she rams her hips into your face. It's all you can do to avoid laughing, here with your face buried between this mortal's thighs.
After a few more minutes of this treatment, she is moaning and breathing hard, scratching long deep furrows into your back, but still she is not quite able to peak to an orgasm.
"Why... can't I... cum?" she pants desperately. You try to answer, but she pushes your head back into her pussy.
A little while later, she releases you. "Auntie Helen is very happy with you, but now there's something else she'd like you to do for her. Your Auntie has an itch, deep inside her, that she neds someone to scratch for her." She looks at you expectantly. It's an absurd sight, this middle aged (yet admittedly gorgeous) woman talking at you authoritively with her skirt around her waist and her pussy gaping in front of you.
"How can I do that, Auntie Helen?" you say, trying to look puzzled.
"With that." she says, pointing at the massive bulge in your trousers. "I want you to push that inside me and rub it around until you find the part that itches."
"Are you sure?" you say, pretending innocence.
"Of course I am, little man. Now... lets see what you have for me, eh?"
She reaches out and unzips you. She takes out the massive length of your cock and instinctively takes the head in her mouth. Good, you think, the Strain is taking effect.

"Now push that inside me, you wonderful young man." she says, an expression of utter lust in her eyes.