Natasha texted me that for our next play date, she had scheduled a check-up with her doctor friend. She also noted that I was due some boosters so be prepared for a few shots. She knew how much I craved injections in my tushie and the anticipation of the event was fantastic. She picked me up for the short drive to the ‘doctor’. On the way she warned me repeatedly to behave myself and obey the doctor. We arrived at a tidy bungalow and Natasha led the way around the house to the back door. She knocked and a voice from inside answered, “Come on in.”

“Boris, this is Doctor Amy,” Natasha began.

“Nice to meet you, Boris,” Amy said, “Please follow me into the exam room.” She was wearing a short white lab coat. The coat was open revealing that underneath she was wearing just a set of matching bra and panties. They were pink and very sheer, left very little to the imagination and obviously worn to provoke a response from me. She led us into a spare room that she had outfitted to authentically resemble an exam room. “Boris, have a seat on the table,” she instructed. Natasha stood at the end of the table with a mischievous expression.

Amy began the perfunctory exam of head and neck, pressing close to me. The lab coat was wide open, offering a view of her spectacular breasts that continued to brush against me. “Ok, let’s listen to your lungs,” she said, putting the stethoscope in her ears, moving around behind me and placing the cold bell against my back. She came back around the table and slipped the stethoscope inside my shirt, “Your heart rate is a bit elevated,” she noted, her free hand resting on my thigh and bumping against the bulge that had arisen in my pants.

“Ok, lay face-up on the table,” Amy instructed. She palpated my stomach and then her hands slipped under my waistband to knead my abdomen, her fingertips brushing the tip of my erection. She was bending over slightly, the lab coat widely parted and my eyes were glued on her impressive cleavage. I glanced over to Natasha who raised an eyebrow in response.

“Ok, now roll over and lower your pants and underwear,” Amy ordered.

“No!” I protested.

“A little help, please,” Amy said to Natasha.

“It would be my pleasure,” Natasha responded, taking me by the hand, prompting me to leave the table and stand beside her. She pulled a chair away from the wall, took a seat and quickly opened my pants and pulled them and my boxers down, baring my cheeks and liberating my stiff cock. She hauled me across her lap and rummaged briefly in her bag, quickly extracting her favorite hairbrush that she had ‘coincidentally’ brought along. She paddled me for a good two minutes before pausing. “Are you going to obey the doctor now?” she asked.

“Yes, ma’am,” I whined, rising from her lap.

“I’m not sure I see the color I was hoping for,” Amy remarked, taking a seat in the chair when Natasha rose. “Can I borrow that brush?” I went over Amy’s knee for another round. “There, now that’s a well-spanked bottom. How’s that feel, Boris?”

“It hurts,” I answered honestly.

“Good,” Amy replied, “Now, leave your pants alone and lay face down on the table.” The crinkly paper felt interesting against my turgid member and the cool air was a nice relief for my toasty backside. I watched as Amy shook down an old-fashioned thermometer and then felt her part my cheeks and slip the instrument into my bum. She then began to prepare two large syringes connected to long needles for me ‘booster’ shots.

She laid the filled syringes on the table at the end near my face so I could get a close-up view before they were plunged into my rosy backside. She swabbed my left cheek with alcohol and then retrieved the first syringe. I felt the needle against my skin and she noted, “Little poke,” and sunk it into my glute. A lovely warm ache began as she forced the medicine into my muscle, then repeated the process on the other side. Now the lower section of my ass was smoldering from the spanking while the upper zones throbbed from the shots.

“Ok, roll over, Boris,” Amy ordered and I complied. “I need a semen sample,” Amy said to Natasha. “Can you stroke while I hold the cup?” Natasha nodded her agreement and began a slow handjob. Amy held a specimen cup ready to catch the results. After a few moments, with her free hand, Amy parted her lab coat and liberated her right breast, then bent forward to press it against my face. I reached up and kneaded it while sucking and nibbling on her nipple. The extra stimulation had the desired effect and Natasha noted, “He’s gonna cum!”

Amy focused on the placement of the cup and only waited for a few moments before the first spurt emerged. She caught most of my release in the cup but a few rivulets landed on her hand and my torso. She offered a juice-covered finger to me, “How do you taste?”

I licked her finger and replied, “Mmmm. Yummy.” She took a drink from the cup and then handed it to Natasha who emptied it.

“You’re right. Delicious,” Amy agreed.