Kara called me livid about Sue’s recent behavior while on a trip to a friend’s wedding. Sue had hooked up with a guy at the reception. A couple of weeks later, her friend had heard a rumor about this particular fellow had sought treatment for STDs at the county health clinic. Sue had been frantic that she and this guy had unprotected sex and now she might be infect. Kara was both angry and concerned and decided to call me.

I suggested I had a friend, Jenna, who was a nurse practitioner at a family practice and I could probably get a discrete and prompt appointment scheduled for Sue. I called Jenna and she agreed to see Sue after regular clinic hours that same day. Kara was grateful at the news and asked me two additional favors. First was that I witness, first-hand, Sue’s exam and any treatment. I asked to be sure I heard correctly, expecting Sue to be very embarrassed with me watching what I expected would be a detailed and very intimate exam. “I want her to be very embarrassed,” Kara replied. “She was not too embarrassed to play naked games with that horn-dog at the wedding. Maybe it will make her think twice before she does something so stupid again.”

“What’s the second thing?” I asked.

“When you get back from the clinic, I want you to give her ass the hardest paddling you’ve ever delivered,” Kara replied.

We drove in silence to the clinic. Kara had told her daughter that I was not merely her ride to the clinic where my friend would see her but that I was to remain with her throughout. Sue knew what an exam for STDs would likely entail but had quit arguing with her mother when confronted with the threat that the post-exam spanking would be five minutes instead of two if she did not quit arguing and merely accepted that I would be observing every bit of her appointment with Jenna.

Jenna led us back to the exam room and began her assessment innocuously enough, looking in Sue’s mouth for lesions. She then asked Sue to remove her pants and lay on her back. Jenna parted Sue’s legs and began a detailed inspection of Sue’s labia, vagina and all surrounding parts. “Did you have anal sex?” Jenna asked. Sue merely nodded and Jenna prompted her to roll-over.

Jenna looked over at me and noticed a familiar condition of stiffness tenting my pants. We were more than just friends, having played ‘doctor’ games with each other numerous times. Save gave me a wink and then parted Sue’s ass cheeks and closely inspected her rectum. Jenna instructed Sue to cover-up and explained that she recommended a blood test for the spectrum of STDs and also prophylactic treatment for gonorrhea and syphilis. She asked if Sue had any questions.

“What’s prophylactic treatment mean?” Sue asked.

“Antibiotic shots,” Jenna replied.

“Shots, plural?” Sue queried, seeming a bit worried, anticipating the shots injected into her tush.

“Yes. Rocephin for gonorrhea and two shots of Bicillin for syphilis. They go in your bum and there’s no denying they will hurt,” Jenna explained. Sue shivered a bit at the news. "Go down the hall to the lab and get your blood drawn and I'll go draw up your meds," Jenna added. The phlebotomist worked quickly and a few minutes later we were back waiting in the exam room.

Jenna returned a few moments later and laid three syringes on the counter. One was a 5mL syringe completely full of Rocephin - a clear, slightly yellow fluid. The other two were slightly smaller syringes of milky white Bicillin. Sue gazed intently at the syringes knowing all that medication was destined to be pushed deep into her ass cheeks. I grew even harder knowing I was going to get to watch. Jenna typed a few notes into the workstation, then stood and picked up the syringes. "Ok, my dear, time to get this done," Jenna announced. Sue nodded reluctantly. "Facedown on the table again," Jenna instructed, no need to remind Sue to lower her pants again.

A few moments later Sue was in position and I moved to the head of the table. Sue reached out and took hold of my hand. Jenna swabbed a spot on Sue's left cheek and brought the tip of the needle of the Rocephin into contact with the skin. Sue gripped my hand even more tightly as Jenna slowly pushed the needle into Sue's glute and then quite quickly pushed the plunger down, forcing the medication deep into the muscle. Jenna positioned the tip of the first Bicillin shot a mere half-inch from the spot of the Rocephin injection and this time more slowly pushed the thick, creamy antibiotic into Sue's bottom. Jenna rounded the table and administered the last shot on the right side.

My pants were bulging under the pressure of my erection and Sue's mouth was so very close. It took every bit of resolve to not unzip and bade her to take me orally. Jenna looked over at me and seemed to read my mind and gave me a knowing smile. When Sue had pulled-up her pants, Jenna suggested to her, "Go have a seat in the waiting room for a minute." When the door was closed, Jenna whispered to me holding the empty syringes, "Do I need to get a round of these for you?" I must have looked puzzled and she continued, "Are you tapping that?"

"No, no!" I replied. "Very tempting but the daughter of a good friend so trying to not be predatory."

"Good," Jenna replied. "I'm going to call you later and arrange a preventive session." She rubbed my erection through my pants. "Don't self-stimulate. Wait for me," she added.

Back at my place, I followed Sue to the guest house and she fetched the hairbrush her mom had declared I should use to finalize the day's message. A few moments later she was across my knee, pants at half mast - again. I had her set a two minute timer on her phone and began to spank, applying perhaps my most intense hairbrush spanking ever.

Typically, in play sessions, the objective is to extend the session but now my goal was to impart as much energy into her tush as possible in the allotted two minutes. I covered her ass with swats including sides and in-between, but most force was applied to the underside where the residual would be felt when ever she sat. I even gave a few whacks higher than usual to the injection spots handily marked with small bandaids. When the timer chimed her bottom was a colorful masterpiece and between the shots and spanking, her tushie was going to be aching and sore for a few days to come.

I let her catch her breath and then she stood and walked to inspect her bottom in the bedroom mirror. I was so very aroused, I needed to make a hasty exit before I did something dumb. When I got back into my house, I grabbed a beer from the fridge and my phone chimed with an incoming text. 'Wanna have some fun?' Jenna asked.