The Experiment: Part III

Story by titan_furry175 on SoFurry

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The Experiment: Part III

The third part of my lab experiment based story off Meesh's characters, enjoy!

Recap: Mark and Dan agreed to be further tested in the drug study. Mark volunteered to fuck dan as the scientists collected data and both provided much data to the scientists. Now we go onto further trials in the study.

Mark panted as he had finished inside Dan. The tiger on the bottom moaning as his cum covered his belly that he had just shot is load onto and over his head. They looked at Doctor Moriarty as he looked at a computer screen and noted data points as he then went and wheeled in another cart. He smirked to himself as he wheeled it in "that seemed to be quick. looks like were still horny though. The drugs are definitely working. Would you boys like to be included in further tests? The drugs should last one more round." the boys practically begged as the agreed immediately. "unfortunately." the doctor continued "it seems as though we won't be able to switch positions seeing that the drugs may lose their effectiveness before you'd finish. so it seems Dan will have to bottom again." The Tiger's cock slowly re-hardened as he felt Mark pull out of his hole. A robotic arm coming down from the ceiling a wiping off Mark's still swollen cock and Dan's covered entrance and belly. Enough cum was left in Dan's ass for lube, as the doctor examined him and wrote more unseen info down on his clipboard. "Alright, ready for phase 3." The doctor walked to the cart and picked up an oxygen mask, placing it over Mark's face as he hooked it up to a line above his head. An assistant came over and placed an X-5 patch on each of Dan's legs and several small patches around his cock. Dan's cock bounced and pulsed as the drug was absorbed into the skin. the assistant also placed a patch along the side of Mark's cock. His cock quickly hardened as he moaned, with the increased oxygen and drugs, his chest heaving as the assistant continued his work which kept him from plunging into Dan immediately. Dan moaned in anticipation as the assistant placed a strap over mark's wrists, keeping them to his side for the test. The doctor restarted the computer program and nodded to Mark who did not hesitate, walking up to Dan's behind as Dan lifted his legs for him.

Mark plunged his cock completely into Dan and moaned loudly as his thrusts immediately rocked Dan back and forth on the table as he gasped "oh fuck mark it feels bigger!" "indeed" replied Moriarty "Those cock patches make your cock slightly bigger and harder. Just for partner's pleasure." Mark Moaned and growled in lust as a machine hiss sounded each time he inhaled deeply, taking more air in for his muscles to keep going. Mark growled as his cock hammered into dan, who felt mark's swollen balls hit his ass with each thrust. Dan gritted his teeth as he clenched hard on Mark's cock, making Mark fuck him like he would his girlfriend. The dominant Tiger continued to pound Dan as he began to make growl more. "Yeah Dan, you like that you little pussy?! You love a big alpha's cock!" The drugs seemed to increase his taunts during breeding as he suddenly began to berate dan with more taunts. "Fuck you got a tight ass! I'm gonna have to fuck you more often you cum addicted bitch! You clench on that cock just like my girlfriend does!" Dan replied as the drug's effect took hold on him "oh fucking yes Mark! Breed me you stud! Breed me like a Tigress!" He began to moan more as the thick and pulsing cock pounding his ass, shaking the table as the assistant and the doctor watched the results, making note of the success of the taunt and dominant-submissive effects he assumed the drug would have.

Mark now slammed his cock base to tip, faster and faster as the oxygen allowed to control his hips more and more. The wet smacking of their hips filling the laboratory as various moans and growl escaped their mouths. They barred their teeth at each other Mark's cock carefully slammed into Dan's prostate, making him leak over his abs. "oh fuck bro, you're gonna make me cum!" Dan mentioned as Mark plowed into him harder. "you better you slut! you're gonna blow your load at the same as i breed you with kitten's. You better wait for me or i'll put that kitty cock in a cage!" The drugs further intensified the taunting, escalating into further threats of sexual torture without the remembrance that the drug would wear off. Dan moaned like a submissive kitty as Mark looked down at his prized slut of the moment as the bottom tiger clenched his cock further to keep from cumming. Minutes had passed before Mark growled, and staggered out a warning before his head raised to the ceiling, his knees bent and his thighs engaged as he spilled his load inside the muscled tiger underneath him. Dan immediately growled and clenched his teeth and ass, his cock having been pushed to his chest started launching ropes of cum over his chest, face, and up over the table above him. Mark took in more oxygen, keeping his orgasm going as his filled balls emptied their contents into Dan's eager hole. Dan's cock twitched as he continue to cum on himself. once finished, he mumbled about the dominant tiger above him's cock and how he had been bred, showing the drugs wearing off with the orgasm. Mark slowly pulled out of Dan as Dan relaxed his legs. Both looked at each other and chuckled at their covered state as Moriarty made a final swishing movement with the last of his pen strokes and then shut off the computer.

Gentlemen, thank you for your help. You will be helped on your way out by Martha our secretary, who will see that you are paid and given a cab ride home. please don't give her a hard time. she's seen every nature of beast walk through here for tests. You will have some side effects of unexpected erections and lustfulness for about the next week. Do use your own means or your girlfriends for that matter. And if the do ask how your libido became this way, do tell her about our services and to tell her friends. Have a good day, boys. The doctor walked back through the sliding metal door he came through as assistants took off the binds and patches, leaving one patch on for their withdrawal period from the drugs and cleaned up the cum from their bodies and helping to redress the built Tigers, leading them to the lobby where Mark and Dan smacked each other's asses on the way out. Both agreed to help in any more tests needed of them and would definitely try to convince their girlfriends to help with their research. Until then, they were fine with the doctor's research tactics.