"Observe"

"Nurse Bootslout!" Doctor Poppinpuus called in a sing-song tone. "I will need your expertise for this experiment!"

"Coming!" a woman's voice replied from outside. The door opened a pale-skinned, brunette woman in a tight, white nurse's uniform walked in the room. With each step, her curvy hips shifted in almost hypnotic rhythm. "Yes doctor?" she asked. "What can I do for you?"

The doctor gestured toward Sam's groin. "This is Mr. Archer," she explained. "There may be conditional stimulus response connecting his right leg and his penis. If there is, it may be the result of new **** cocktail we have him. I tested this by using a reflex hammer on his knee. I would like you to test the reverse correlation. I would do it myself, but obviously it would be difficult to observe and perform the procedure at the same time.

Nurse Boutslout began unbuttoning her blouse. "Is there any particular type of stimulation you would like me to perform?" Her blouse fell to the floor, and she thrust out her perky breasts in their direction.

"Whatever you prefer..." She said, "Though you should make sure your approach touches every centimeter of his rock-hard co...penis. And if you can mix things up, that would be great."

Nurse Boutslout nodded as she slid her white skirt off, then turned her attention to Sam. "Well hello there," she said, "I'm Cassandra."

"Sam," he said, putting his hands on her milky white hips.

"I see the doctor got you all hot and bothered," she said.

"Oh, he was already bothered when I arrived," Dr. Poppinpuus chimed in. "Though I'd like to believe I helped out..." She had picked up a plastic chair near the edge of the bed, and moved near the couple's right side.

Sam turned to her and nodded fervently. Nurse Boutslout straddled him and lowered herself onto his cock. "There's only one way to take care of big stud like you." She wiggled her hips back and forth as she allowed herself to slide all the way down his cock.

"Ohhhhh," she moaned as his penis slid into her. "ahhhhhhhh."

"Ok," Dr. Poppinpuus started as nurse Boutslout's lay flush against Sam's. "Please do exactly as I say.

"Nurse, please wait three seconds before sliding back up," the doctor instructed. She examined his leg closely while the pair struggled to not fucking "3... 2... 1... Hmmmm," she replied, "no response. Please repeat the same action."

"Oh fuck oh fuck oh fuck," the nurse mouthed as Sam slowly raised the nurse off him by her hips, then slowly eased her back down. In the meantime, the doctor watched attentively, but also hiked up her skirt, and undid a couple buttons on her blouse.

"Ok. Three more seconds," the doctor reminded them. "3..."

Hot tingling sensations coursed up and down the nurse's spine, causing her to quiver around Sam's cock.

"2..."

The nurse started moving her hips side to side in anticipation. She wasn't sure how long she could last with a dick that size bottomed out inside her.

"1..."

Sam firmly grabbed nurse Boutslout's hips in anticipation.

"Ok, it seems like..." the doctor began.

"OOHHHH GOD PLEASSSEEEEEE LET HIM FUCKKKKK ME!" The Nurse cried out, turning to Dr. Poppinpuus with a face twisted in agonizing pleasure.

The doctor scoffed as she waved her hands allowing them to fuck as they pleased. Sam thought she sounded kind of jealous.

He slapped her ass-cheek and said, "giddy-up!" Nurse Boutslout responded by throwing her hips up as high as she could and then slamming down with full **** onto Sam's extra-large sex-bar, making her ass cheeks clap and rumble.

"YES! YES! YES!" She cried out! Her emerald eyes locked onto his as she rode him for dear life, then pushed his face into her tits.

Meanwhile, the doctor had, very clinically, picked up the reflex hammer and started fucking herself with the handle.

"Sam," she said breathlessly, "please fuck me." She leaned forward, removed his near hand from Cassandra's hip and the red, rubber triangle in his hand. The doctor grabbed her ankles and raised them high as Sam sawed the instrument in and out of her pussy.

As the three of them fucked, they developed a rhythm. The nurse would slide down the patient's cock, causing him to push the handle into the doctor's pussy, which the doctor would buck and cry out in pleasure. "Fuck me Sam!" Cried Poppinpuus.

"Shittttt," Sam moaned. It wasn't long before his balls started to churn, signaling he was almost ready to cum. He did his best to focus on thrusting the hammer, hoping it would distract him and make his cock last longer. It seemed to be going well, until Cassandra started cumming.

"OHHHHHH GODDDDDDD!" Cassandra screamed. She stopped bouncing Sam's cock and merely shook as the orgasm ran through her. The love current passed from her to Sam cock-first, causing a torrent of cum to explode up into the curvy nurse's vagina.