I looked across at Alan who just shrugged. I took a deep breath and started to tell Doctor Bard about how my brother and my Dad had both had sex with me and about my Aunt and Uncle and the party at their house during the summer break.
As I told the doctor of my sexual exploits in great detail I noticed how the front of his tunic started to jut out. The nurse had slipped her hand under her housecoat and was clearly rubbing her pussy as I related my terrible tale.
When I had finished the Doctor Bard was left with an enormous erection under his tunic and the nurse was flushed and gently moaning as her fingers worked in her slit. Alan's cock had revived and he was slowing wanking himself.
"I see." Said Doctor Bard in a slightly less controlled tone than before. "I think, Nurse, we shall proceed with the endoscopy."
The nurse sighed and pulled her hand from under her coat and reached over for a spray bottle from the medicine rack. She opened my mouth and sprayed some cold liquid from the bottle onto the back of my throat. "That's just to relax your throat for the endoscope." She explained.
She then manoeuvred me so that my head was hanging back over the end of the examination table. My knees were raised up again and my legs parted. The nurse moved round until she was between my legs and gently ran the tip of her finger down my wet slit. The next thing I knew her long tongue was parting my lips and seeking out my firm clit. I moaned with pleasure as she began her oral examination of me.
When I looked up behind me Doctor Bard was standing there. His tunic was open and his long thick cock was in his hand inches from my mouth. He moved forward and placed the tip in my mouth. "Now, Sam. I want you to breathe through your nose as I place this "endoscope" into your throat. You may use your tongue on it if you like."
With that I felt his stiff cock slide deep into my mouth and encroach on the confines of my throat. I gagged a little then breathed deeply through my nose as the rest of his cock slid into my mouth and throat. His big hairy ball sack ended up on my nose then he started a slow fucking motion into my mouth.
By this time the nurse's tongue was working on my clit while two of her fingers slid into my tight wet pussy hole. I gurgled with pleasure as both doctor and nurse worked on me.
Out of the corner of one eye I could just see Alan with his eyes like saucers rapidly moving his hand up and down his rock hard prick. I was aware that my next orgasm was creeping up on me and that the little movement I had was concentrated in grinding my hot slit onto the nurse's tongue and fingers. Then I caught the doctor's tense and uncontrolled voice "Nurse, I think she's ready to have her brother fuck her. I want you to guide that long prick of his into his sister's tight cunt."
I couldn't believe what I was hearing. The doctor has clearly lost all his professional control and was spewing forth a tirade of filthy sex talk as he rammed his large pole in and out of my mouth.
The next thing I experienced, as I couldn't see, was Alan's stiff knob entering my tight wet cunt. I groaned in ecstasy as he pushed it in deep into me stretching the taut vaginal walls. I let rip in orgasm immediately, bucking as best I could against the table. It was then I felt a slender finger slide slickly into my anus causing a second orgasm to burst in on the first.
As I calmed down I could clearly sense that the doctor was in distress. His body was stiffening and his strokes into my throat jerky and erratic. "Nurse, nurse, I going to cum. I'm going to fill this little girl full of my spunk. I'm going to spurt all over her face so that you can lick it up. Oh, nurse, I'm cummmmming!"
