A probe monster

You quickly paste yourself to the wall as a large perfect white tentacled mass rears up on a thick muscular tail displaying a frill of tendrils sporting a single black eye with a glowing blue pupil in the center. You get a sense of dread at whats about to happen when the doorway rematerializes into a wall leaving you trapped with this beast. It wastes no time extending its smaller tendrils to pin your arms to the wall and grab your ankles before you can instinctively close your legs. It sends one tendril to your crotch running it over you to feel every detail as it gets in your face scaning you with its large unblinking eye. As it slides its tentacle down your crack discovering your asshole it redirects its focus as it drags you to the center of the room pinning you flat to the floor raising your balls to inspect your pink pucker.without warning you feel it jam a tentacle deep into your rectum massaging your insides learning what it can from you . You gasp trying to pull away from it to no avail as it moves deeper anddeeper into you then starting to insert more and more and more of its limbs into your slowly expanding hole. Your jaw drops gasping as it squishes is soft head into you violently wriggling its way inside your distending your stomach as its frill disappears inside you releasing your arms and legs as its tail slowly slurps inside you. You grasp at it trying to pull it out but its no use as it slips from your grip disappearing inside you. You begin rubbing your now bloated stomach feelingt the creature writhing in your guts somehow avoiding making you nauseous. In fact your dick stands up straight as it probes your insides almost tickling you internally causing you to writhe and squirm on the floor. You suddenly feel a thick intrusion climbing up your body feeling your throat bulge waiting for a gag reflex that never comes. Your lips are parted by a slimy white tentacle that you desperately try to swallow only succeeding in making obscene gurgling noises before it retreats back into you.