Even though she was at her limit, the dildo was only in Rachel halfway. Absent-mindedly, she kept trying to press it in deeper, her mind filled with thoughts of taking it in to the hilt. Every time she pressed the thick head of the dildo into her limit, she squirmed with pain, but she desperately wanted to take it all. Suddenly, she felt a red hot sensation instead of pain—'Wh-what?' she thought, 'is that... precum?!'
In a sudden fit of reason, she realized this wasn't an ordinary dildo and tried to pull it out, despite her body's protestation. As she pulled it back slowly, she could feel the head of it sliding against her walls, her vagina clenching its veiny exterior tightly, her labia wrapped around the fake cock in a vicegrip. Every bit she managed to inch it out threw her into a deeper state of arousal, causing her to moan lightly with every movement. After what felt like forever, the head was almost out, With one final shuddering breath, she prepared to tug it out with all the force she could muster.
But it wouldn't budge.
Rachel began to panic, pulling harder and harder, gripping it with both hands, but to no avail. Then, just as she was about to pull again the dildo thrust itself deep into her with impossible force, forcing her to bury her face in the mattress. As it pulled back it released another hot gush of precum, causing her insides to tingle as her body accepted it into herself. With each forceful thrust, the dildo penetrated deeper and deeper into her body, her vagina stretching and growing to accommodate the insistent intruder. The deeper it went, the less control she had, and eventually Rachel just gripped the mattress with both hands, her face and breasts buried into her sheets while her hind quarters rose and fell to the rhythm of the dildo slowly taking her over.
She was overtaken with equal amounts of fear and lust as the dildo quickened its pace, making her vocalizations wobble more and more. She'd lost count of how many times she had climaxed, but still everything was building up inside her. The feeling of helplessness and fullness was turning her on, and the fact that she was enjoying it made her feel even more helpless. 'God, I love being fucked like a little slut,' she thought to herself. a rapidly dwindling part of her disgusted with the thought.