His lubricated phalli tried to slide inside her, but in her fear she had clenched herself up, and his prods were unsuccessful. He prodded harder, but her tight holes resisted him. Finally getting angry, he slammed both tentacles inside of her simultaneously, feeling the heat of her blood trickling down the tentacle that invaded her ass. It felt mushy and hot inside, but her colon had been cleaned out before the experiment had begun, so his tentacles were free to slide through her intestines unimpeded.<br/><br/>He also penetrated her vagina forcefully, filling it with his throbbing tentacle more than any human penis could. He pressed against her cervix, feeling that there was more to this crevice beyond. He wanted to fill all of her, leaving no part of her body empty, and he pounded against her cervix repeatedly. Her body stretched and contorted in ways that no girl's body ever should, but no permanent damage was done. From the side it looked like something was crawling under her skin all along the length of her thin, flat stomach. When he thrust deep inside, rubbing against the front of her vaginal wall, a visible bulge would appear in her tummy as if something was about to pop out of her bellybutton. He could feel the tentacle in her vagina and the tentacle in her ass sliding past one another, squeezing the thin stretch of skin in between.<br/><br/>The tentacle in her ass had wound its way through her large intestine and carefully slithered through her small intestine. The monster knew that if he ripped her insides, she would die, and the fun would stop. His other tentacle approached from the mouth, completely gagging the teenage victim and burrowing deep in her spasming stomach. Finally, the two tentacle were almost touching via the duodenum. He had burrowed so deep inside of her that he felt her trembling heat radiate all the way through through his alien mass. His smaller tentacles that molested her body on the outside ejaculated first, spewing caustic cum all over the beautiful girl. It hit her in her teary eyes, it spurted into her nostrils, it completely glazed her tight, plump butt and breasts, it stuck her hair together like a cheap conditioner, it dribbled down the ridges of her delicate neck and her arched back, and it flowed in rivers down her spreadeagled arms and legs, dripping into puddles on the floor from her fingers and heels. She was completely dominated, deflored, and literally drenched from head to toe in steaming alien cum.<br/><br/>The big tentacles that were raping her bruised insides vibrated and shook violently in anticipation of the real climax. Huge boluses of cum could be seen traveling along the lengths of the swollen tentacles, which made them swell even more inside her effectively corking her like a bottle.<br/><br/>He growled in satisfaction as he reached his enormous orgasm.<br/><br/>"Insemination stage complete," a mechanical voice announced from an invisible loudspeaker. "Approximate Duration: Sixteen minutes. Expected Incubation time: sixty two minutes."