He expected her to take him to the hilt, or at the very least slow down a tad, but Yana kept on humping like a ruthless machine. Her pulsating pussy milked spurt after spurt of his sticky cum, drinking it all up and thirsting for more. The overstimulation was killing him, and he began to thrash under the bear with little effect; eventually, the warm pleasure of her pussy sliding around his dick was drowned out by pure, undefinable sensation, and right as he thought he couldn't take any more she slammed her crotch into his and let out a roar of ecstasy. Her thick muscles spasmed under her fur as her snatch squeezed hard, doing its best to wring out the last few drops of cum. Mark watched her face light up with joy as she continued to orgasm, and her loins got so wet that fat little droplets started to fall to the ground.
Her orgasm didn't take all that long to subside, but when it did, she stood up halfway and let Mark's cock slide out of her with a sticky schlorp. A rope of cum dripped to the ground as she pulled away, and with one paw she reached down and wiped the cocktail of musky bodily fluids from her fur. She sniffed it, licked it, licked it again, then got a fresh sample and offered it to Mark. "Sok semeni i kiski is good for strength, keep you up and hard." At first, he was revolted, but he quickly realized she wasn't going to stop until he did. Mark gave her paw a hesitant lick, tasting the snot-like flavor of his own cum mixed with the taste of pussy juice.
Mark sat up and scooted back, putting a little bit of distance between himself and the polar bear. It was then that he noticed something out of the window behind Yana, something he wasn't really sure he saw. It appeared to be a white figure moving through the snow, a big and bulky creature clad in hide clothing and carrying a spear. It shouldn't have surprised him that Yana wasn't the only one of her kind out in the Arctic, but it was kind of odd that one of her kin had found the Jeep so quickly. "Uh, Yana?" he murmured, pointing toward the advancing figure, "Who's that?"
She turned and looked out the window, squinting for a moment before turning back to Mark. "He of my tribe," she replied, "No bother us, we can do more." The big bear began advancing on him, pinning his legs down with her powerful paws. As her curvy, muscular frame moved to straddle his hips, terror began to bubble up in his stomach, and he tried desperately to figure a way out of becoming her sex slave.
All of a sudden, a flash of inspiration flared in his mind. "W-wait! What if, ah... what if he's got important news?" he sputtered, "L-like your tribe's in danger? Shouldn't you... shouldn't you at least talk to him?"
Yana let out a loud, carefree laugh. "Krolik, you have too much fear. My tribe strong, hold against any bad thing." When Mark didn't calm down, she tilted her head quizzically, trying to deduce what had him scared. "Hmmm, is thing wrong?" He wasn't looking at anything behind her, and she couldn't see any threats advancing through the windows... what was he- it was her! It suddenly made sense now, the way he'd seemed to cower and grovel: he didn't want to become her slave, which was a perfectly understandable fear given the human's scrawny frame. "Oh, no fret, krolik," she purred, "I no want slave of you. I want mate, not property." He still seemed worried, but the big bear had just the thing to restore his trust. She turned around and backed her hips up to his, but instead of moving to sit on his face like he thought she would, she began gently grinding her hips into his groin. "See, I no want control, I let you have good time."
Her wet snatch rubbed tantalizingly against Mark's cock, getting him aroused in spite of his fears. In addition to her own feminine juices, Yana was still leaking cum from when he creampied her, and the warm, sticky substance helped her glide along his shaft. The soft folds of her pussy quickly got blood pumping into his limp member again, and the sight of her round, plump rear on his lap certainly helped things along. Before long, his semi-hardon was parting her vulva with each of her thrusts backward, getting her nice and warmed up before he penetrated her fully. He still didn't fully believe her claim that she didn't want total control, but with arousal and adrenaline rising in his brain, he decided it couldn't hurt to get a little handsy with her. As she continued to tease him with her warm, wet snatch, he grabbed her hips with both hands and tried to guide her upward. "C'mon, girl," he muttered, "Let's get this thing started."
The massive bear complied without hesitation, lifting herself up and hovering above Mark's stiffening cock. A little glob of vaginal fluid dripped down onto his crotch as he held his cock vertically with one hand, and as he guided her down with the hand still on her hips, he felt the warm slickness of their combined bodily fluids once again. Her soft vulva easily gave way, letting him slip inside her pussy's warm embrace with a soft squelching. Both of them let out a small gasp as she took him to the hilt, bringing her big, squishy rump to rest on his crotch. Then, after her vagina squeezed against his cock a little, she lifted her hips back up again, running every inch of her wonderfully textured insides up his shaft. She began humping against him as he guided her hips up and down, bouncing her lovely rump to the wet, sticky tune of lovemaking. The suspension on the Jeep began creaking once again, but softer this time, as if acknowledging the agreement the two unusual lovers had made.
Granted, it was a bit more one-sided than Mark realized, but he was blissfully unaware of that pertinent fact; the sight of the big polar bear's rump riding his cock was amazing, and the warm, sticky sensation of her lubed up pussy was one of the best things he'd ever felt. Each of her thrusts downward seemed to beg him to go deeper, contracting around his stiff member and pulling him inward. Eventually, he grew tired of moving her hips with his hands, but to his delight, he found that she kept the same pleasant pace without his guidance; all he had to do was sit back and let the polar bear work her magic, and that's just what he intended to do. "Mmmm, there you go," he moaned, "Nice and easy... ahhh, there's a good girl."
Yana was content for now, riding the human's stiff cock with her back turned, but she knew she wanted more. She wanted to see his face when she fucked him, see the pleasure and fear that went through his expression as she thrust into him. Granted, it still felt great having his cock slide in and out of her, and she could even get herself off by rubbing her clit, but... she wanted control. Patience, she thought to herself, she just had to play servant girl for a little while. Once she brought him home, he'd be utterly at her mercy, and if she wanted to, she could just tie him to a bed and fuck his brains out whenever she got horny. That'd be fun...
"Oh god... I'm gonna... gonna... urrrgh!" Mark quickly pulled the big bear's hips down onto his cock, engulfing it in soft, wet, squeezing goodness. He immediately began emptying his balls into her, shooting powerful spurts of cum as far into her as they'd go. Yana could feel his seed running deep into her, filling her up to the brim before oozing down out of her pussy. When she stood up, his cock easily slid out of her gaping snatch with a loud schlorp, dripping cum and other juices onto the floor. She moved back a bit before turning around, then dropped onto her paws and knees, exposing her genitals by spreading her thighs. Mark felt a tad tired from his orgasm, but the view was inviting enough that he crawled over for a look. Yana lowered her hips even further down to his crotch level once he got close, and as he looked her over, her warm brown eyes met his.
"Come, krolik, I am your mate, you may do as please. I still wish for orgasm, maybe you provide?" Part of Mark's mind found her behavior somewhat suspicious, especially given how domineering she'd been when they first met, but his paranoia was swiftly overcome by a primal desire to breed. He scooted behind the large bear, adjusted her hips so that her pussy lined up with his cock, then gave his meat a few stiffening tugs before thrusting inside. There was so much cum and pussy juice that he squelched in without much friction, the heated grasp of her insides quickly pulling him deeper. It didn't take much to get him humping against the bear, bouncing both her curvy ass cheeks and the creaking Jeep with each thrust. He liked the feeling of being on top and in control, of being the dominant partner in the encounter. Yana was moaning up a storm, too, with one paw reached between her legs and rubbing at her slimy clit. "Mmmph," the big bear moaned, "Fast, fast... aaah, o bozhe! Sdelay menya svoyey zhenoy!"
Mark could feel the familiar pressure building up in his balls, each thrust into her tight, slimy pussy coaxing out his seed. He leaned down over her like a feral dog, grabbing onto her big, squishy tits with both hands. Yana, in turn, braced herself against the door, digging her claws into the frame as she pushed back into his hips. He could see the gouges her bestial claws left in the plastic, but he was too close to the pure bliss of an orgasm for him to care. It didn't take long before his thrusts began to slow down, and as he started to cum, he drove his cock all the way into her delicious snatch, pressing his crotch flush to her fur. "Yana, I'm cumming..."