Put your all into it

You lower yourself in front of Xyryx, and when the signal is given, you dive in with gusto. You run your tongue up her labia, delivering a kiss to her clit as you reach it.

As your mouth works hard, your arms encircle her waist, where the humanoid and arachnoid parts meet, holding you up as you extend your legs underneath her. Obstructed by your overfilled womb, you find it difficult to identify your target as you reach a leg up and trail it gently across her underside.

Then you find it.

Near the back of her spider body is a narrow slit. You carefully push your toes into the tight gap, and start to slowly slide your foot along the length of it.

Xyryx's moans, already significant due to your efforts with your mouth, rapidly grow far stronger.

Your foot is suddenly ejected from the slit, pushed by a rapidly extending ovipositor. Taking a deep breath, you bring your other leg up, gripping the thick shaft with both feet. You are now hanging underneath her, supporting the full weight of yourself and Mistress's eggs with just your arms and the tenuous grip of your feet. You won't be able to to keep this up for long.

You redouble your oral efforts, and start to pump your legs in and out, sliding your feet along the length of the ovipositor.

Xyryx lets out a loud scream as your face is drenched with her juices. A spray of liquid also hits your nethers, shot from her ovipositor as she came. As the orgasm subsides, you drop your feet back down and gently pull your face out of her muff, before collapsing to the web beneath her, panting.

From one side, you hear Mistress reach her own orgasm and grin as you realise you've won.

=======

"Pay up," says Mistress, after both Arachne have recovered.

Xyryx makes a show of grumbling as she counts out the gold, but you can tell her heart isn't really in it. As she hands it over, she makes an offer to Mistress. "That is an incredible **** you have there, Flixa. What do you say to a hundred gold pieces and my **** in exchange for yours."

Mistress laughs. "Not a chance."

"I would never have accepted that either," says Xyryx, "but I had to try." She looks over her shoulder at Sorinne, who is now standing directly behind her. "You will be going through further training. Until you reach the standard of Flixa's ****, you will pleasure me before breakfast every morning. Until I am satisfied, if you need to introduce yourself, you will do so as 'Broodslave Sorinne, Cunt-Licker-in-training'."

"Yes, Mistress," she sighs.

=======

"Excellent work, Tarissa," Mistress says as she leads you home.

"Thank you, Mistress."

"I saw what you were doing with your feet, and believe me I want to experience that for myself. However, I also saw how much it took out of you. As a reward for your efforts, I will weave you a harness which you can lie in underneath me without having to support your weight."

"Thank you, Mistress," you repeat, knowing that is the only acceptable response to something described as a reward.

"Now, once we get home, you are to go and prepare dinner for yourself, and then feed the incubators."