"So, that was the Hydroxocobalamin. I know those shots tend to burn quite a bit and you did really well. The Biotin jab I'm about to give you will be much easier."

Beth tensed as he finished swiping over her leg with the alcohol and she felt the next needle being driven into her thigh. It stung only momentarily and then she felt only the slightest of pressure before the injection was over. She breathed a sigh of relief and once again became aware of the hot, heavy throbbing sensation caused by whatever he'd put inside her ass.

"What is inside my bottom Ben?"

"Relax" He chuckled "It's just a small butt plug I placed there to distract you from the shots. Although I do want to examine you more thoroughly in that department, it can wait for the time being. We will get the final shots done first"

Beth groaned. "More shots? Can't those wait too?"

"No, I'd like to get all the shots done immediately. Your body has been crying out for these nutrients for some time. I know it's not nice to be on the receiving end but you will feel so much better for it I promise "

He began to loosen the restraints around her ankles and hips and then swiftly removed the bar holding her legs open.

"The next shots will be going into your bottom so over my knee please." He sat down on a large armless office chair and motioned that she should go across his lap.

"I'm going to give your bottom a warm up first. Vitamin C and Glutathione work best if the muscle they are going into is relaxed and warm."

Every part of Beth wanted to fight against this part of his plan but Ben had such a commanding presence she just found herself quietly obeying as he guided her small frame across his lap.

An eternity seemed to pass whilst Ben unhurriedly began to fold the remaining parts of her hospital gown up around her waist so that her bottom was fully exposed in the same way that her breasts were.

He tugged and twisted the plug in her bottom a few times and then very slowly but firmly began spanking her with his hand, pausing every so often to rub and caress her bottom whilst he surveyed the growing warmth and redness he was creating.

At first, Beth tried admirably to remain calm and composed but as the spanking continued, it became increasingly harder to stay still and not squirm around on his lap. As time went on and the spanking relentlessly continued, Beth's cute bubble bottom was gathering an intense heat. It wasn't long before she started to plead and whimper, kicking her legs as each spank vibrated through her and left a fire burning in its wake.

Ben was unfazed by her squirming and quickly continued to pepper her bottom and thighs with a variety of spanks that ranged in intensity. Some came in vicious blocks of rapid fire so much so that Beth found it hard to breath and others in slow anticipation so that Beth found herself begging and pleading for him to stop, even though it was undeniable that she was incredibly aroused from the spanking.

Vibrations from each spank ricocheted through the plug that remained firmly lodged in her bottom, stimulating every nerve in both her sex and, she blushed furiously, her other more shameful place. Prior to meeting Ben, Beth had never been touched by any man in that place before but these past few days had been quite the learning curve. Yes Beth was indeed developing quite a taste for all kinds of stimulation in and on her bottom.....