Try to take both cocks

You only live once, right? And when will you ever have this kind of opportunity again? And if you need a more noble justification, you can bet this will satisfy that pervert sorcerer and save the serpents from the hunters. Either way, you barely manage to grab both of the solid, slick cocks in one hand and guide them to your hungry hole. The tapered tips press against your opening, spreading that ring of muscle, and you draw sharp, shallow breaths as your hole stretches. It doesn't hurt, but it feels intense, making you ache inside, a **** emptiness that needs to be filled.

"I admire your enthusiasm," the serpent says, "but I don't think they're going to fit. Oh!" You both gasp as the heads slip past your sphincter. Slowly, you sink down on them, taking his cocks inch by thick, slippery inch. They fill you, pressing against your prostate and making your legs shake as waves of unbearable pleasure roll through you. It feels so good to be stretched, filled, taken so completely. The only thing that will make it better will be when you feel those cocks explode inside of you, dumping their hot, sticky cum deep in your bowels.

"Oh, yes...oh, fuck..." you moan, rocking back and forth, pushing down a little harder each time, but after about ten inches, you just don't have the leverage to get them any deeper. "Fuck me," you beg the serpent. "Hold me tight and pound my ass, please!"

"I thought you would never ask," the serpent says, wrapping you in his muscular coils again. You tremble in anticipation as he undulates his serpentine body, pulling out, then slamming back in. Twelve, fifteen, eighteen inches disappear into your well-fucked ass, deeper than you thought possible, and as you feel those twin shafts plunge in to the base, as deep as they can go, you cry out and cum hard, bucking and writhing in the serpent's cold, wet embrace.

As the shudders fade away, you draw greedy, sucking breaths and try not to pass out. The serpent leans down, his black tongue flicking out and ticking your over-sensitized cock.

"I hope you're not finished already," he says. "You are so tight and hot, unlike my own kind. Maybe, after my people are safe, I'll come back and negotiate with the sorcerer for my own human pet. I could definitely get used to sheathing my cocks in a hot body. Maybe even yours."

"Oh, well, I- I..." you stammer, unable to form a coherent sentence with him drilling your ass.

"I haven't even shown you the best part," he says, and you watch as thin blue threads of electricity begin to crackle along his scaly hide, traveling up his long neck, over his face, and disappearing into his mouth. He leans closer and slowly drags his tongue over your balls, and you yelp, every muscle in your groin clenching as a shock of electricity leaps from his tongue to your balls. His sinuous tongue wraps around your cock and you whimper, bucking as the cold, prickling sensation lights up your nerves, making your cock jerk and throb, your balls clenching again and forcing a thick stream of cum to bubble from the tip and roll down the shaft. The serpent licks it away and sends another bolt of pleasure splintering through you.

"Imagine if I did that with my cocks," he says, and you shiver at the thought. "I could, but with both of them in there, it might kill you, so I won't. But keep it in mind."

"I- I will," you pant, unable to stop your hips from rocking as another powerful orgasm builds inside of you, like the rumble of distant thunder signaling an approaching storm. You moan, helpless as the serpent begins to pound you harder, faster. You can feel his cocks throbbing and twitching inside you - hopefully, that means he's about to cum, too. You tense, drawing a noisy breath between your teeth, your balls so full and heavy, **** to eject their load, and then the serpent sticks his tongue between your thighs, licking a line of cold fire from your nuts to your cockhead, and you scream as the orgasm rips you apart, spurting thick strings of white all over the serpent's face.

The cold coils tighten around you and the water churns and froths as the serpent's movements grow **** and erratic. He slams his cocks deep in your clenched ass, and you feel them both pulsing as they shoot a giant load of serpent cum into you. You swear, you can feel the thick liquid filling your bowels, making your abdomen swell. Maybe you're just imaging it.

Finally, he pulls out, his long shafts making a wet, sucking sound as he slides out of your thoroughly creamed ass. He sets you back in the water and moves aside to let you pass.

"Don't forget my offer," he says as you weakly dog-paddle past him. "I would take good care of you."

"I'll think about it," you say, and you can't stop thinking about it, echoes of your intense orgasms shuddering through your body as you remember being filled by that thick serpent meat. You hope whatever lies around the next corner doesn't mind fucking a used asshole, because you can't imagine ever being the same after what you just experienced.

Around the next corner, however, you find yourself swimming into a large cave grotto, with glowing stalactites hanging from the vaulted ceiling and an opening leading outside, the bright sunlight slanting through the water. You did it. With a sigh of relief, you begin to swim for the exit.

Suddenly, the water between you and your escape begins to churn, and a nightmare from the depths of the ocean rises to the surface. Black, slick flesh glistens as a dozen or more grasping tentacles writhe in the water, surrounding a monstrous face with a wide, toothless mouth filled with more squirming tentacles and mottle green and brown tongue. It has two pairs of muscular arms, and - you guessed it - more thick tentacles in the place of legs. And you nearly pass out at the sight of the giant cock jutting up out of the water, as thick and long as one of your legs, and covered in spongy lumps and ropy veins.