Final Exam

It was soon time for us to leave, and I really didn't want it to end. The Secret Medical Room had been a blast...all the equipment and tools were icing on the cake! Plus the fact that I got 'play' with Becky was a bonus!

We would be leaving in the morning, and I knew this would be my last chance to 'Examine' my sister. So the night before I planned...and thought hard. I'd ask Becky first if she'd like to play...should she say 'no', I'd slip her the sleeping pills or **** her. Then I could use the equipment on as long as I wanted.

I go to Becky's room and see she's finished packing as well. "Hey, Becky."

"Oh, hi there Mike. You ready too?"

"Yeah. Hey umm...would you be up to one last game of 'Doctor'?"

She blinked. "You want to play that again?"

"Just one last time." I beg. "Please?"

Becky bit her lip, then after a minute sighed. "Alright, alright. I'll do it."

I mentally cheered, and we go into the hidden room. As Becky undresses, I set up all I'd need for her examination. I also check the EKG, MRI, X-Ray, and Ultra Sound machines so I'd be able to use them too. They all were working perfectly, and I wash my hands as Becky sits on the Exam Table in her bra and underwear.

"Okay, Bec. Let's start with your temperature."

She holds the thermometer under her tongue, and I take her pulse before the device beeped. I tell her it's normal, then take her blood pressure before examining her eyes. "Look up...now down...good. Gaze to the left...then the right...now roll them for me. Well done; they look healthy." Next was her ears, and I say that she had a lot of wax in one, but both where ok. After feeling her neck, I take out a tongue depressor and a pen light. "Open wide, Becky. Wider...bit more...good. Now stick out your tongue for me....all the way out...very good." I look all over her mouth, then down her throat before examining her tonsils and uvula. "Say 'ah'."

"Ah"

"Once more."

"Ahh~"

"Throat looks good." I have her close her mouth, then ask, "You've only done Oral right?"

Becky blushed. "Y-Yes. Why?"

"Can you show me? It's for Medical Science only, I promise."

"...o-okay."

I hand her a Dildo, a good sized one, and watch my sister lick it before taking it in her mouth. I remember when I had her take that long one down her throat...and it makes my rod harden. She soon stopped and I put the toy to one side, before listening to her lungs and then heart. When those were deemed ok, I had Becky take off her bra and let me do a breast exam. "So soft..." I lightly pinch her nipples and she bit her lip. When done with that, I wheel over the MRI and tell her that it was the best way to examine her 'internally'; such as her chest and intestines. She lay down and stayed still as the Machine took pictures of her Organs...Becky stayed there until after I used the X-Ray Machine as well.

"All looks great." I tell her as I secretly save the images onto my phone. Then I show her. "Healthy."

"That's good."

I warm up the Ultra Sound, before feeling Becky's stomach. "Any pain?"

"No."

"How 'bout here?"

"No."

I 'hmm'ed and place the wand on her stomach; both of us watching the screen as it revealed her tummy. "Aside from the pieces of food, nothing's wrong here." Turning off the machine, I have Becky remove her underwear and place her feet in the Stirrups once I cover her legs with a sheet. Putting on gloves I feel and examine her outer lips, then spread them to see her pink flesh. "Color's good." I tell her, before sticking my fingers in and feeling around. Becky holds back a moan when I hit her G-Spot, and I open her up after. "Womb entrance looks good too. Now Becky, I'm going to need to test your 'sex-drive'."

"What-?!"

"Remember when I hooked you up to the EKG?"

"Oh, right."

"We're going to do that again; but I'll be using a different Dildo this time. Also, I'm going to blind fold you so the lights don't hurt your eyes. Ok?"

She nods and I hook her up before putting a sleep mask on her to keep her eyes closed. Once the EKG was on, I finger my sister...the Dildo was a vibrating one, and I slowly move it in and out of Becky. I soon go faster and her heart does too. Becky soon starts to writhe on the table, she getting close to cumming....a few minutes later she does.

My rod throbs, but I hold back and put the stuff away. Becky pants heavily, and takes off the sleep mask once the lights were turned off.

"Am I...h-healthy?"

"Very much so." I reply, making the table have her sit up. "Thank you for playing with me one last time."

"S-Sure thing."

I grab a glass of water for her; and bring it over before I clean up. After a minute, I look over and see Becky asleep. I must've worn her out. I pick her up and carry her to the couch in the study. I take a chance and kiss her lips...she didn't wake up. I slip my tongue inside her mouth, still nothing...so I deepen it.

She moaned a little but didn't wake, I stopped anyway just in case. I went back to clean up more, and bring Becky her clothes. My sister was still asleep when I returned; and I check her pupil reaction to make sure was ok. Which it was...then I brought her to her room and placed her on the bed. But there was one more thing I had to do. I take off my clothes and my pulsing rod springs free...then I open my sister's legs and entered her. She doesn't wake but her body tenses for a minute, before relaxing.

"I love you Becky," I thought, while pounding her pussy. "I love all of your body!"

Her vagina walls squeezed me and drew me deeper inside. I could feel the pressure building and I pull out, then open her mouth to have her give me a blow job before I release my seed inside her oral cavity. On instinct, she swallowed and continued to sleep on. But I was still hard, so I pounded her pussy again...making her breasts bounce with each thrust. In my head, I hear her moaning my name and saying to go harder. Soon I'm at my end and, throwing caution to the wind, I cum inside her.

Becky shudders and her pussy clamps around me until I finish. I pull out and clean us both up, before dressing Becky.

She didn't wake until dinner and we ate leftover pizza, then placed our bags by the door. Late that night, I copied the Doctor's notes on how to make the pills and serums. They could come in handy in the future; and I made sure everything was back where it had been the next morning before we left. Becky waved as she drove off and I started planning for next winter break...