A scientist. He wants to study you.

Three days have passed since you and Toby entertained the “selected clientele” of the alien restaurant. You now both agree that, although it was a very strange experience, you would not mind doing a second round. Not immediately, thought!

Currently, you are relaxing in the natural part of your exhibit. You have just finished fucking for the 83nth time of the day and, although the pheromones the Keltraxans keep spraying continue to keep you horny and lustful, it will take some time before Toby will mate with you again.

You glance back, to the point where Toby is currently enjoying the view of your butt and his semen coming out from your asshole, and realize that he’s starting again to stroke his cock. You have fifteen, maybe twenty seconds before he will want to mount you again.

You are currently on all four, and are keeping yourself entertained by moving your butt in front of Toby, just like a pendulum. You know that, if you keep doing that, his recovery will be faster and more aggressive, but frankly, you do no give a damn. All you can think is how you want to fell again his hard cock in your bowels.

For a single, strange moment, however, your thoughts are not directed to sex, Toby or sex with Toby. You think to the Keltraxans, and how they said that the “master Zookeepers” are the one that gets to decide whenever “the time is ripe to breed each captive pair”. For the moment they are not interested into having Toby breed you, but for how long? What if they decide that it is time to give the zoo the show of a Human’s pregnancy? In fact, they do not have much to do: just need to stop whatever for now is keeping you from getting pregnant, and leaving Toby's baby batter doing its job. Mm, baby batter…

You try to keep your mind focused on the Keltraxans and their pregnancy politics, but it is too late. Your brain is filling himself of beautiful images of Toby kissing you, massaging your breasts, fondling your pussy, asserting himself over you. That is the moment when you realize to your horror that you have stopped moving your butt.

You watch over Toby. He seems to have totally recovered. He only needs a little “incentive”…

You start back moving your butt, but this time you move it faster. You know from sure that Toby cannot resist such a show. And you’re right. You sense him putting himself back in feet, walking to you and touching your butt as to control its softness. You let gasps of pleasure come out of your mouth as Toby's finger slide over yours buttocks, your legs and your pussy.

Suddenly, Toby spanks you. When you were still on Earth, this would be enough for you for shout at him and stop having whatever sexual thing you were busy do. However, a lot have changed since you left Earth. You limit yourself to watching back to him and smile. And when he sees your smile, he realizes that now he can ask whatever he wants from you.

Instead of spanking you for a second time, he inserts his big, amazing cock between your buttocks and start sliding it back and forth. He keeps like this for a good minute, while you moans. His cock continues moving over your butt, miming the real sexual act that he is surely going to give to you. Then, he strangely stops.

You watch back for a last time, and you see him grinning. You know what is going to happen.

He inserts his cock at full speed into you. You are not able to contain yourself, and simply scream in lust, while his cock start working like a piston. You now watch ahead, but your mind is not concentrating about the nothing that is happening in front of you. It is concentrating about the everything that is happening behind you. Or better, in your behind.

He keeps pounding you for ten full minutes. Your eyes keeps weeping tears of pleasure, while his hands go over your breasts and start squeezing them. This is pure pleasure, so much that you know that you will not be able to resist.

And in fact, you aren’t. You feel it before Toby, but realize that something is happening inside you. You do not want it to end, and try to resist, but after some seconds, Toby manages to reach his objective, and you cum violently. You have closed your eyes for the pleasure, so you cannot watch what is happening, but you can feel it. You can feel his sperm, mixed with your sweat and cunt concoction, while they spurts out from your body and fall on the grass under your butt. You can feel his swear, perfumed like Chanel for your nostrils, running over his naked body and raining on your back. You can ever feel something juicy thing coming out from your tits.

Is that milk? You are actually in you period? Oh well, the Keltraxans surely cannot have changed idea in less than week. Can they?

Does not matter: that was good. Very good. So good, you want a good kiss to seal this sexual masterpiece.

“Toby, kiss me!” you say without even opening your eyes, your tongue drooling of pleasure.

Strangely, Toby does not answer.

You move slightly back your head, eyes still closed.

“Toby?” Still no answer “Honey?”

You open your eyes, and that is when you see Toby's scared face looking ahead of you. You watch ahead, and see what Toby has seen before you.

A Keltraxan. A male, apparently.

You have not seen him arriving, however you know he is here for you two. He has a strange white bag, and something electronic attached to his chest. Maybe an alien pacemaker, you think.

He puts his left hand over the corresponding ear, and you realize he must wear some kind of earphone. He does not look like he can understand you. You however, can understand him.

“Yes, I’m in the Human’s habitat right now. They does not seems to be aggressive; however, I am keeping myself at distance of safety. Still I cannot believe you managed to get two! Ok, I will wait for the collars before start examining them!”