She loves the feeling of big balls knocking up against her. Thump, thump, thump, big balls slapping her bottom in perfect rhythm with each powerful thrust that the man administers; heavy balls, swollen with semen, hanging down in their sack and knocking against her over and over again, thump, thump, thump.

Each time she feels it, it gives her a sense of thrill, of excitement, even of fear, knowing that the man is going to unload, that those big swollen balls are going to empty themselves inside her. With each thrust, each slap of his balls against her, she wonders, will this be the one? Are those balls going to explode into me now? Are they going to empty their sperm into my womb? She is a little scared at the prospect of it, but it thrills her; it is the most wonderful, frightening, exciting feeling in the world, knowing that he's going to unload, laying there helpless on her back and waiting, wondering, fearing that each thrust will be the one.

She always tells herself that this time, she's not going to let the man come in her, at least not if he doesn't have a condom on. She's not that kind of girl, you know? She always makes boys her age wear condoms, but then she got that fake ID and got picked up by a man the first time; when they got to her house--she's an only child and her divorcee mom works nights, so when they got to her house she was going to tell him he had to put a condom on but then he dropped his pants and presented his cock to her and she saw his big, heavy testicles hanging down between his legs, leadened with semen, swinging as he climbed onto the bed to mount her... Oh man that was no fourteen year old dick that was the real thing that was a grown man's dick and there was no way she was going to ask him to cover such a majestic thing in latex.

Now, every time she sees a man drop his pants and present his big balls to her, she knows, her breath quickens and her throat tightens with concern, but she knows that she is going to let him come inside her. In fact, she even feels like it is her duty: Those big balls need relief, and she needs to be the one to give it to them.

And so she lays there, fear rising in her chest with each of his thrusts, with each knock of his balls against her bottom. She can't help herself, even against her better judgment she wraps her legs around him so that he knows he doesn't have to pull out, that she will hold him in place while he finishes and not let him go until those wonderful balls have emptied themselves into her womb. When she senses he is getting close, his breath is labored and he has that serious look, she will look him in the eye and say, breathlessly, "Please unload your balls inside me." She feels silly after she's said it, and he gets that wry smile on his face, the smile of a man who knows he gets to come inside a pussy, and she knows what he's thinking, he's thinking, man did I pick the right slut to go home with tonight! And she's mortified that he thinks that about her, and she scared of the prospect of having his sperm in her womb, but she can't help herself and she says loudly, "Please come! Fill me with your semen!"

Now she can feel the electricity, she knows he's close, as his balls thump against her bottom. Her breath is short with excitement, with thrill, with fear, as she knows that each thrust may be the one. That's right, I am a slut, you did pick the right slut to go home with! His big balls--thump, thump--seem to have gotten even bigger, heavier, slapping hard against her bottom, aggressive and domineering, reminding her that the man is in charge now, she is just his slut, just a receptical for his come. Oh god, please come! Please make me take your come inside me!

And then, it happens. Usually they slam into her, really hard, the hardest yet, and she feels those big heavy balls whack against her bottom and this time they hold themselves in her, and then usually they grunt, she loves that sound, low and manly and understated but full of masculine sexual release, or sometimes they shout or squeal or laugh out loud, and she knows, the fear is in her throat now and she has to fight off an urge to push them away but she knows that this is the one, this is the thrust that brings him over the edge. Sometimes they grab her, she loves that, like they are forcing her to take their come; usually they grab her hair or her head, but sometimes they grab her neck, like they are threatening to choke her if she doesn't cooperate.

Then he rears back and slams in again and she feels his balls knock against her and they are all wet, and she feels how easily his cock slides all the way into her and she knows why, she knows that he has shot his come into her. That's it, there's nothing she can do now, her heart is racing and she is terrified, knowing that she has his sperm inside her fertile womb. He grunts again, pulls her hair or tightens his grip on her neck, then rears back and slams in again.

It's best when this goes on for what seems like forever; he just keeps unloading, pumping semen into her. She figures, if he's going to do it, if she's actually going to let him do it, then it may as well be a huge load, a motherlode, give it all to me, give me every drop you've got!

But eventually he's done and she doesn't want him to leave so she keeps her legs wrapped tightly around him, holding him in place, but the guy always wants to leave. He's done and he wants out of there. So he pulls out and familiar emotions flood over her--she feels foolish, like a slut, a whore, an idiot. His load was so big it's leaking out of her and down to her asshole and she can't believe she let the bastard come and she can't believe he did it. Fuck, now I've got sperm inside me, now I'll be walking around for days knowing that this bastard's sperm is swimming around in my womb.

She wants to do something, she wants to hit him or scratch him or tell him she loves him, maybe he'd stay then? But instead she just lays there, feeling like a whore, his come leaking out of her and onto her bed, while she watches him get dressed as quickly as he can. He's outta here, he's already gone, dumped his load and see ya later. But she knows, even though she feels like a total fool, she knows that if she sees balls like that again, it'll happen all over again, she'll let him come inside her. She just can't help herself.