You make a soft groan of your own, having finally made your choice about what it is that you want to do to help Nina out... Slowly, you lean down towards her asshole, staring deep into that hot, tightly clenched, wrinkled hole of hers, placing your hands one either side of it to steady yourself... Making a soft groan, you lean in, and, give it a deep, eager, passionate kiss, pressing your lips, and face, deep into that scented hole of hers...
You hear Nina make a soft gasp, then moan, of pleasure as she feels you do that... And can feel her pucker firmly, yet gently, flex, and clench against you, as if it were returning your kiss. You can almost tell that she has a big smile on her face already, enjoying what you are doing to her rear like this.... She's never had anyone do anything to her rear like this before, never had anyone give it these kinds of attentions.... She's always been the only one to give it any notice, as far as she can remember at least... She lets out another groan of pleasure, making another soft wiggle under you, as she tries her best to stay still and let you work.
You beam to yourself, and with a soft sigh, lean back. With a shiver, and moan, of pleasure you watch as it winks and flexes at you so enticingly... It makes you feel, very very excited, to get to watch it doing that... To watch it working like that, and, even more so, to think of just how she intends to use this orifice very shortly now, and, what that must look like...
With another moan of pleasure, you move your hands down, and start to gently, firmly, rub them over her pucker, feeling the warm, tight, wrinkled, powerful flesh and muscles underneath your hands as you work them over her musky orifice, feeling the bulge the mass behind it is making even now. Speaking up, to make sure she can hear, you say, "Mmmmm, I agree, that pizza just doesn't seem to appreciate what you've done for it... The makeover you've given it, changing it from boring old pizza, to your fresh, beautiful poop!"
Nina giggles in delight, and sighs to herself before she responds, "Heehee, I am so delighted that you see that! That you agree with me! Mmmm, well, that's just the way food is I guess.... It doesn't appreciate what I do for it, how it gets to be sacrificed for my tummy, and, how it gets to be pooped out by me later on, after I'm all finished with it..." She giggles again, and looks back, beaming, over her shoulder. "Mmm, you know, I never thought you would like my butt, well, at all, much less like this... Or, that you would enjoy talking with me about my poop." She grins hugely, "I used to hate when you came over, but, now, I am starting to really like having you around!" She giggles again, sighing as she relaxes, letting you tend to her asshole for a while more.
As you are working, you feel her pucker wink, and flex against you again... And, from within, you hear a soft rumble, before she lets out a short, rumbling fart right into your face. It smells quite strongly of digested pizza, and, the odors of her young bowels.
Nina giggles again, and looks over her shoulder, before, without even saying "excuse me", says to you, "Heehee, well, I think that means I am ready to try again... Mmm, but, how should I do it?" She looks thoughtful, "Should I try sitting on the toilet again, and pooping there? Or, should I set out some toilet paper, and just go on the floor?" She gives you a very naughty smile, "That way, you could, be there, to help me... coax, my poop out of my butt." She giggles, and beams in delight, seeming to really enjoy the thought of you being so close to her rear, and getting a ring side seat, to her taking a dump...
You blush, shivering excitedly, knowing that either way, you are sure to just love the show she's about to give you....