It was a warm summer night, which was why you were sleeping on top of the sheets. You were having a shamelessly horny dream about some tentacle monster ravishing you, probably grinding against the bed in your sleep. Though for some reason, one of the tentacles felt much more real than the others. It slid up your leg, silky smooth against your skin, and all at once your brain realizes it's not from your dream.
You jolt awake, looking for the source. Was it a cat? A snake? You don't see anything around. Except, maybe- no, that was just a shadow. And you were so close to the good part of that dream, too. You look down at your underwear, which features a prominent bulge and wet spot at the tip. You grumble and turn back over, grinding into the bed a little as you try to resume your dream.
You're almost asleep again when you feel it again. It's in the same spot, on your inner ankle working its way up to your thigh. You jump up just in time to see it slither off of the bed- a long, thin, inky-black tentacle. It's eerily close to the one in your dream, so you logically determine you must be imagining it. But you sleep on your back this time anyways, looking down towards your feet.
The third time you see it, you had your hand down your underwear. Why did you have your hand down your underwear? You should probably just get off so you can get to sleep. Or you would, if you hadn't just seen the tentacle pop up again. Now that you're ready for it, you can see it clear as day. It's dark, and it blends in with the shadows, but you see it stick it's little "head" up, almost like it's sniffing the air.
You stop all motion, and it slowly angles towards you, almost like it's looking at you. That's weird, you think, that's a perfect size for- no. You will not consider fucking the weird alien tentacle monster. Undaunted by your stillness, it slowly works its way up the bed towards your foot, and then moves along your leg. You're unsure if you should scream or thrash, or if it's poisonous and you're already infected. Instead you just sit there, curious what it'll do.
If you had to describe the motion, you'd call it "sheepish". Every few inches, it stops, or retracts slightly, or stops to "sniff" again. Every time it does, it moves ever so closely towards your hand in your underwear. You're also unsure how long it is. It seems to be an inch or so wide at the tip, and grows to about two inches down the length. But you haven't seen the other end. Under your bed, presumably. Eventually it gets a little too close for comfort, and you shift away from it. In response, the tentacle shirks away, almost like it thinks it hurt you. You almost think it looks cute. It's only after you shift you notice that you're leaking precum again, and it's all over your hand.
You reach for a tissue to wipe it off, but the tentacle moves towards it first. Almost it like it could- no, you will not consider the idea that the tentacle wants to eat your precum. It could just be reacting to the movement. Against your better judgement, you hold out your precum-covered hand to the tentacle. It slides over and rubs itself along your hand, nuzzling against the sticky substance like a cat. Just to strengthen the simile, it makes a slight purring noise when it's completely covered.
Okay, so the tentacle monster likes your precum. Test number two, saliva. You lick a finger on your other hand and hold it out to the tentacle. It sniffs your fingers, spending more time on the wetted one, but no purring. Interesting. You also get a good chance to feel the thing's skin, which is still as smooth as you felt earlier. It seems muscular, capable of tremendous dexterity, and can flex and curl itself into various forms. Your brain has already come up with hundreds of ways those can be useful, and so you override every self-preservation instinct and take off your underwear.
You sit up, curious what it'll do. The sudden movement gave it pause, but when you settle back down it sniffs and immediately looks towards your dick. You watch it hesitantly move towards you, sniffing more and more. This whole exercise has given you time to relax, so the first time it touches the tip you're quite soft. The lingering scent of precum seems to draw it, and so soon the tentacle is looped once, twice around your own quickly-hardening cock. It's not moving or squeezing, just sitting there in a loose coil, purring warmly against you. The rest of the tentacle's length, draped off the bed, makes a slight rippling motion that looks contented. You have no idea what is happening, but you can't stop now.
You gingerly take the coil around your cock and start to slide it up and down the length. The tentacle seems confused, but when another drop of precum squeezes out it seems to understand. It starts moving of its own volition, up and down, squeezing slightly. You make a turning motion with your hand and the tentacle quickly complies, wrapping even more of the coil around you and rotating them back and forth. The more you leak the more it moves, and soon it's humming and stroking your cock eagerly, lubed by your own precum.
"If only there were two of you," you mutter, lying back on the bed. Within seconds, another tentacle has appeared in your vision. What? You try to sit up, but the monster is still stroking away and you have to slow it down for a second to regain your composure. "There are more of you? And you can understand me?" The creature makes no noise, but ripples in a way that you're pretty sure means "well enough." A third and fourth tentacle appear at the foot of your bed, snaking their way over your legs. You lie down, flabbergasted. This is going to be even more fun than you thought.
You've coaxed out four of the tentacles from beneath your bed, though you're not sure what all they can do. The first tentacle is still coiled around your dick, sliding up and down at the exact pace you set. Its contented purrs have elicited the occasional twitch and moan from you, which only seem to encourage it. You've concluded that they seem to be attracted to the pheromones that you produce when aroused, lucky for you.
You've set up the second tentacle rubbing your chest. Your tits are pretty sensitive, and you were able to demonstrate what you needed from it pretty easily. You ran your hands up your sides, over your ribs, and then grabbed your tits and flicked your nipples a few times for good measure. The tentacle tentatively mimicked you, wrapping around your chest and caressing you. It's gentler than you wanted, but force could be taught later.
What you really want now is one of these inside of you. You don't have any lube near your bed, and there's definitely not enough precum to use. You're about to give up on the whole thing when you decide to just ask. "Can you make lubricant? Can you make yourself slippery like this?" You gesture to the precum at the head of your cock. Funnily enough, the monster seems to think for a moment. You weren't sure if it would be able to understand. "I want you in here," you clarify, gesturing below, "but you need to be slick first."
The third tentacle slides towards your face, and you tentatively open your mouth. Almost sheepishly, it parts your lips and slides down your tongue. You're shocked at the audacity, but you relax and tilt your head back anyways. Emboldened, it begins to thrust in and out, creeping towards your throat with every movement. It must be trying to use saliva, you realize, but you don't stop it.
You lie back and enjoy the rhythm, the gentle purrs sliding around your dick, the subtle groping of your chest, the length probing its way into your throat, all in unison. You use your hands to guide the one on your chest, to make it grasp you more firmly. You take a hold of the one in your throat, and shove it deeper, rougher than it had dared by itself. The monster adapts to your request, and soon it's fucking your face with vigor. You feel the muscles contracting, pulsing, tightening- and suddenly something hot flows out of it. What you can only imagine is tentacle cum fills your throat, and you try to swallow as much as you can. Your mouth fills up anyways, and you feel the monster pulsing over and over and over again. The entire thing purrs, seemingly satisfied, and slowly retracts itself from your gaping mouth.
You open your eyes just in time to see the cum-covered tentacle slide between your legs, below your cock, and you lift up your legs in anticipation. Sure enough, the slick mess works well as lube, and you feel it start to probe your entrance. You slow the one on your cock, wanting to savor this. The monster probes around, spreading the cum around your thighs and ass, almost like it's marking it's territory. You swallow what cum you haven't drooled out of your mouth, and it tastes... surprisingly good. Finally, the tentacle constricts itself to barely more than the width of a finger, and gently nudges you open. You gasp, grabbing onto a nearby tendril for support.
The creature takes this as a sign, and pushes deeper, widening your hole. It encounters little resistance, slick and smooth as it is, but you can feel every time the muscular form twists and expands inside of you. You feel it start to make a thrusting motion, similarly to the one in your mouth. Inspired, you take the fourth tentacle and bring it to your mouth. If they liked it so much, why not? You coax it deep inside, and let it start thrusting again. You feel so full, but the one in your ass can't seem to get the angle right. It's having trouble, you know it wants to thrust deep inside of you, but it can't seem to reach. You try moving your legs, but everything is just so hectic.
You feel two more tentacles - wait, weren't there just the four? - grab your legs and pull them up towards your chest. The muscles on these are firm, and you're not sure you would have been able to resist them if you wanted to. The repositioning allows the tendril deep in your ass to start fucking you properly, and oh god does it take advantage. It seems to have found your prostate, sliding in quick thrusts from your entrance all of the way to your core. You moan around the flesh pressed down your throat, making a guttural noise of pleasure. "More, harder, please," you moan, but you're not sure if it make out a word your saying. Or if it even cares anymore.
You're not sure how many tentacles are on your body now. A few of them have spurt, leaving pools of slick cum on your face, your tits, your cock. Usually they finish by fucking your face, though a few came just from grinding against your skin. The one fucking your ass right now has been going for a few minutes, and you're a little suprised you haven't finished yet. Maybe the cum you swallowed earlier had something that's messing with your body? You're certainly producing a lot more precum than before. It's mixed in with a lot of the monster's juices at this point, but you're not complaining.
A few more tentacles have wrapped your body, slid between you and the bed, and lifted you slightly. They arch your back, opening your throat so they can find their way deeper inside you. One cradles your head and wraps itself gently around your neck. On occasion it squeezes slightly, mimicking a hand just above your collarbone. Where did it learn that? You didn't ask it to do that, did you? Either way, it shifts as another bulging length fires its load down your throat, its pulses visible through your neck. How much have you swallowed? You're not sure, but it tastes amazing. Even better than it did the first time. Now every time your face is free, you beg for another. Every time your mouth isn't being violated, you plead for more. You make the whiniest noises, asking the monster to consume every last piece of you.
Some time later, every part of your body is bound with muscular rope, being groped with alien fingers, or being roughly fucked and filled to the brim with alien fluids. Your arms are pinned behind your back, your body entirely off the bed. Your ass has had a few loads dumped in, but you're begging for more. You're begging for anything and everything, when the things escaping your lips are words. You feel the latest intrusion into your ass subside, spent, when something much larger presses itself against your stretched hole. You can't get a good look at it, but you feel it pop inside. It's not slender and flexible like the other tentacles, this one is firm and rigid. The monster slowly lowers you onto what must be their own cock, way wider than anything you've taken in the past. You whine and whimper through the tendril down your throat, and cry against the assault. But you don't ask them to stop.
The monster cock is ribbed and knotted. It's not nearly as smooth as the others, and it curls slightly at the tip. The monster manipulates your entire body to make it fit, lifting you upright and spreading your legs wider than they should go. Eventually you must have bottomed out, because it starts thrusting. While the other tentacles were smooth and firm, this is far rougher than any of them. It slams into your insides, not caring about your sounds anymore. Over and over again it slams, while another tendril spews cum over your dick. Seemingly reminded of the reason it approached you initially, two tendrils begin to stroke your cock absentmindedly while the monster continues its assault on your ass.
You know the signs that a tentacle is about to cum - the rhythm of the twitches, the deep slow pulses, the sudden stiffness - and you start to feel it again deep inside you. The monster pulls your body over its cock one last time, splitting you open somehow deeper than before. You feel something warm, different than the normal monster cum, seep inside of you. It hard to tell, but it feels like... eggs? The knot in the cock keeps any from seeping out of you. But at that same moment, you feel a gate open within you. Something has definitely changed, and now you feel the weight of a pent-up orgasm crash into you. Like you had been holding it back for minutes, hours, right on the brink. It seems the monster wouldn't let you finish until they had. In the face of that pleasure, your body convulses. Your body is full of the monster and its fluids, filling every inch of you with itself. It constricts around you and holds you in place as your body is torn apart from both the eggs and the ecstacy. Your dick spurts all over your chest, and each pulse is a tsunami over your nerves. You cry through the alien flesh in your mouth, through the constant sensation on all sides, through the thing inside of you. The bliss is so strong that you black out for a moment, and come to being gingerly lowered back towards the bed.
The monster cock slowly deflates and slides out of you, but whatever it put inside of you does not. The one in your mouth removes itself gingerly, but the rest only loosen slightly. A few massage the last drops of cum from your dick, a few absentmindedly stroke your chest, and the rest nuzzle up against your skin. Almost like you're being held.
The monster lets your arms and legs relax, and you slump over, unable to move more than a few inches. Your body is covered in cum, but they do their best to clean you up. The gentle strokes against your skin massage your sore muscles. You start to fall asleep from sheer exhaustion, but before you do, you watch them retract over the end of your bed. One lingers behind, stroking your back, then your thigh, then your leg, almost waving goodbye.
"Goodnight, my new friend" you whisper as you fall back asleep.