Some digital/anal action.

?I want you to put your thumb up my ass,? Zoe says.

You pause your licking, not sure that you?ve heard her correctly. ?Unless you think that?s too weird,? she says. ?It?s just that I have the most amazing orgasms...?

That?s enough persuasion for you. You reach behind her, and your hand closes on her tail, which twitches playfully. You follow it down to where it meets the base of her back, then start to explore underneath, between her buttocks.

When your thumb finds the dimple of her anus, she makes a little sound, equal parts surprise and excitement. ?That?s right,? she says, a hungry growl in her voice. ?Now go slow. Nice and easy. And when I say stop, you stop.?

?Mmm hmm,? you acknowledge, mumbling into her pussy.

She giggles. ?And don?t stop licking me. That was very nice.?

As instructed, you return your tongue to Zoe?s eager clit, but most of your attention now is on the contact between your thumb and her ass. You know that she?s putting a great deal of trust in you, and you don?t want to let her down.

?Mmmm ? go ahead,? she says, holding very still.

You start to exert a little pressure. The muscles of her sphincter are strong and solid, and at first you don?t think you?re going to get anywhere. But then she relaxes a little, and the tip of your thumb penetrates her, and she draws a sharp breath.

You hesitate, but she?s not at all displeased. ?That?s good,? she whispers. ?A little more ??

She moans as you push deeper into her ass. She?s very, very tight, and you can feel her pulse throbbing around your thumb. You get as deep as the first knuckle before she says, ?Okay, stop ? I mean, keep your thumb there, but keep licking me ??

You stroke her pussy with your tongue, slow and steady, teasing her clit, feeling her tight anus twitch around your thumb. She takes long, deep breaths, shifting her weight just slightly, trying not to interfere with the very sensitive operation occurring beneath her tail.

?A little deeper,? she says, eventually.

You push, again, and your thumb moves a little more easily this time, going in as far as the second knuckle.

?Nnnnaahh ?? She rises up on her knees, just a little, maybe an inch. She puts one hand on your head, lightly, keeping the other on the headboard to hold herself upright. She?s breathing quickly, and when she lowers her pussy back down to your face, and your tongue finds her clit again, she gives a shuddering gasp.

Her hips rock, in short little motions, pushing her pussy toward your lips, nudging backward gently against your thumb. ?Oh ? god ? oh ? god ? ohoh ? ?

Suddenly, her hips lift again and she screams, her ass clenching tight around your thumb. As she cries out and shakes and twitches, her hand leaves your head to reach around behind herself and tug at your own hand. You get the idea, and let the pressure of her ass **** your thumb out of her. She shouts again, grabbing your hand and hanging onto you tightly.

You?re able to reach her pussy with your tongue again, and she purrs, sinking into you, letting you soothe the fury of her orgasm. Her hips start to slow, and her breathing starts to even out. Eventually, she sighs, and gives your hand a squeeze.

?That,? she says, ?is how you send Zoe into orbit.?