Thomas Trent - Back door babysitter

"That's enough. Now we'll wait three minutes to see what your temperature is."

Next, Doctor Horn placed a regular thermometer into her mouth. He motioned to her to hold it with her tongue. Then he sat down in his chair, out of Annette's view.

After several minutes, the doctor stood up and removed the thermometer from her mouth. It read 98.6 degrees. Then, he went around and pulled the rectal thermometer from her butt. It also read 98.6 degrees.

"Damn, Annette. The two thermometers show too much discrepancy for me. I'll have to take your temperature rectally again. This time we'll use a more accurate thermometer. But brace yourself. This one is a little larger than the last one was."

As she lay on her belly, she reached back and spread her ass cheeks wide open for the doctor, though he hadn't asked her to. She was that eager for something to be stuck up her hot asshole. Unknown to her, the doctor greased up his forefinger with Vaseline, then greased his second finger too. Pretending that this was another thermometer, he pressed his fingers up against her brown asshole.

"Now, don't look back, Annette."

Annette grunted in the affirmative as his fingers pressed home. The tight brown hole stretched to take the two fingers inside it as Doctor Horn pushed forward. Annette smiled to herself with pleasure as she felt what she thought was a thermometer slide up her ass. My, my, she thought. This thermometer is much better than the first one was.

Little by little, the two fingers fucked into the tight entrance. Doc Horn worked them back and forth as he went deeper, spreading the lube inside her asshole. When his fingers hit bottom, he pushed against the asshole as if to cram his hand inside, and rotated his fingers from side to side, and around and around, twisting and churning Annette's insides, to her complete delight. She loved the feel of this big thermometer.

"Now, Annette, we'll just wait a few minutes and see if this thermometer reads the same as the other did."

Doc Horn kept his fingers lodged up her asshole, while she lay flat on her stomach, eyes closed, savoring the delicious sensations. If Annette had been paying more attention to the good doctor, she would have noticed a healthy cock-bulge in the front of his pants, only partially covered by his white lab smock.

After a suitable interval, the doctor withdrew his ass-plugging fingers, still pretending they were a thermometer.

"Hmmm. This one says 100.2 degrees, Annette. I don't know if something is wrong with the thermometers or what. Tell you what, we'll try to find out what the correct temperature is by using the most advanced rectal thermometer available today. You're fortunate that I have one. But, I warn you, it is somewhat larger in size than the first two were. I'll put it in slowly so as not to cause you very much pain. And I guarantee we'll find out the truth with this one."

The doctor turned and picked up a pillow and gave it to Annette.

"Place this under your hips. We need to raise you up to get the proper angle. Then close your eyes and completely relax."

Annette raised herself up and slid the pillow under her hips, then lowered her moistened cunt onto it. As Doc Horn suggested, she closed her eyes and fully relaxed her body. Damn, she felt lucky. She was about to have her wish fulfilled, to have a large object fucking her ass.

Assuring himself that Annette had her eyes closed, Doc Horn unfastened his pants and jerked them down to his ankles. His stiffened prick stood at attention, ready to fuck her puckering asshole. He took a glob of Vaseline on his fingers and spread the oily lube around the big head of his prick. Some more lube went to lubricate the shaft of his hard cock.

Ready to fuck, he moved up behind Annette and pushed her knees as far apart as they would go, telling her that the machine needed space to get in. Next, he told her to spread her ass cheeks as far apart as they would go, in order to facilitate insertion of the thermometer, and she did so.

Her luscious brown asshole was fully exposed and ready for fucking. Doc Horn stuck one finger into her greasy ass as he climbed up onto the examination table behind Annette. He slid his hard cock along his finger, guiding it right to its target.

Annette was quivering with lust as she felt the big head of his prick pushing against her asshole. What a thrill! The doctor pushed forward and his big cock-head slipped inside her ass. Annette gave a grunt of pain-pleasure as the fuck tool started its journey into the dark hole, stretching the tight ass ring as it went. Annette was experiencing the heights of pleasure as she felt her asshole stretched to the limit.

Doctor Horn was careful to take his time and go slow, as he did not want Annette to become too suspicious of what he was doing. He slowly inched his cock inside her stretched asshole, pushing a little forward and pulling back, then fucking slowly a little deeper than he had at first.

Annette lay back and enjoyed the delicious sensations. She quivered and shook as the doctor inched his prick deeper and deeper inside her itching asshole. She loved the feel as her ass was stretched and probed. Her clit was sending messages of impending climax to her brain as she felt the doctor's hard cock fucking up her lubed shit-chute. She thought to herself that this was unlike any rectal thermometer she had ever experienced, but was grateful for the opportunity of being on the receiving end of its use.

As Annette felt the "thermometer" inch its way in, she felt a tremendous urge to frig her aching clit. She desperately wanted to climax. Throwing caution to the winds, she gave in to her body's demands, and reached under her belly with her hand. Locating the swollen nubbin, she circled and pulled on the sensitive clit.

Doc Horn, seeing how horny Annette was, realized that he had unwittingly stumbled onto buried treasure. He had always wanted a woman who would willingly let him fuck his pulsing prick up her quivering asshole as often as he wanted to. He inched forward, fucking his slick boner forward until it was finally buried to the hilt. He groaned, it felt so good and tight. Letting the brown hole grip his cock in its tightness, he lay back to enjoy without moving, and tried not to place his weight on Annette's back-in an attempt to maintain the deceit.

Annette, now getting into frigging her own clit, began to lurch and heave her hips in unfulfilled fuck-lust. The hell with it, she thought. It was now time to relieve the aching in her clit, time to climax. Time to let loose with all her pent-up desire. She bucked as her orgasm loomed. She jerked and humped on her hand, slamming her ass back onto the hard prick. She let the hard cock fuck in to her insides as her fingers played with her swollen clit. She pinched and pulled, rubbing and fondling the sensitive skin. Now and again a couple of fingers would stick inside the cunt hole itself. They slipped and slid in the wetness of her hot cunt. She squirmed excitedly as she began to cum.

She groaned in ecstasy as her brain was overcome by the sensations she was receiving from her cunt and asshole. She humped back and forth, unable to control herself, thoroughly enjoying the ass-fucking the good doctor was dishing out to her. Her tight asshole ring gripped his swollen prick, stretching and sliding over the probe. Her ass gripped and let loose with each convulsion of her climax, gripping and loosening, gripping again, and again letting go as she relaxed between spasms.

Doc Horn now began to get down and fuck as he felt Annette come alive under his stiff, ass-fucking prick. He fucked his hard cock in and out of her pulsing asshole, feeling the tight grip she held him in. Her ass was so good, its tightness, exquisite, the ultimate in fucking. Moreover, he enjoyed the sight of an ass spread wide open, hunched up in the air and receiving a stiff cock. He was immensely turned on by the sight of Annette's young asshole, stretched to the limit and plugged by thick cock. Those beautiful ass cheeks were spread wide, and he was thrilled to think that it was his big, throbbing cock-meat that was fucking the hell out of her tender asshole.