It Was Thrilling

"Mmmm..." Helen moaned as she began stirring. Something felt strange, but in a good way. Looking down, Helen panicked for a moment at the moving sheets before her mind caught up. "Give me a few, Kaz!"

Helen heard a pop sound followed by a mischievous giggle. "Finally up, are ya?" Kaz teased before wrapping her borrowed mouth around Helen's shaft once again.

"Alright, you deserve this!" Helen bellowed in Adam's voice before thrusting her hips up and holding Kaz's head in place, forcing her coworker to be purely on the receiving end. Feeling her temporary cock hit the back of Kaz's throat, Helen moaned as the sheets were thrown off.

"Gak!" Kaz coughed as she struggled against Helen's masculine hand. Getting free, Kaz removed her mouth and glared at Helen. "You're lucky your gag reflex is better than mine."

"And you're lucky I haven't cum yet." Helen joked with an strained expression. "Speaking of..."

"Finally! Your body kept me up all night!" Kaz complained before sliding on Helen's cock gracefully. "OHMYGAWD..." Kaz moaned as she shuddered.

"Adam and I are pretty compatible, aren't we?" Helen grunted as Kaz began to grind on her. "Relax!"

"Helen, Helen, Helen!" Kaz moaned, her mind going blank. Helen, on the verge of orgasm, moved her hands up and squeezed Kaz's borrowed nipples, twisting them slightly. Immediately, Kaz moaned as her toes curled, her insides squeezing Helen's cock as tight as possible. "AHHH!" Kaz screamed, her mind completely lost in pleasure.

Likewise, Helen couldn't hold back any longer, and moaned "Kaz..." as her cock twitched and spewed semen inside of her own body.

"That. Was. Incredible." Kaz panted as she laid on her back next to Helen.

"Yeah..." Helen nodded in confirmation as sweat dripped off of her. "Adam's spent though."

Sighing, Kaz rolled her head to stare right at Helen. "And every other man is off-limits with your body..." Kaz complained. "Any sisters?"

"Jesus Kaz!"

"It's addictive!" Kaz shouted, attempting to defend herself. "Waaay better than my own body."

"You've got a chest at least." Helen said with a heavy sigh.

"But yours is so fit! And sensitive..." Kaz said with a perverted grin. "You wouldn't want a trade, would you?"

"Of course not."

"I figured. Mind if I take a quick shower?" Kaz asked. "You're welcome to join meeeee."

"As much as I'd like to, Adam's body can't handle your stimulation. Trust me."

"Fine." Kaz grumbled before heading off to clean her coworker's body. Hopping in, Kaz turned on the water and immediately thought of something. "Detachable shower head..." Kaz mumbled as she detached it. Without a second thought, Kaz lowered it to her crotch and increased the pressure...

"Hmmm..." Helen muttered as she flipped through the spellbook. She was looking for one thing in particular, mostly due to Adam's complete exhaustion. After flipping through page after page of complete garbage text, Helen's eyes lit up as she found something that might work. "Reverts physical condition one day..." Helen read before shrugging and beginning to cast.

Instantly, Helen felt the sweat and grime on Kaz's body literally vanish as the soreness in her muscles, mainly the lower half, eased up substantially. Within moments, Helen felt fantastic! Like a new man! Or rather, a woman possessing a man. Staring at Kaz's body that sat lifeless on the floor, Helen cast it again. Like with Kaz's body, Kaz's body seemed to improve instantly.

"Maybe I should cast this on Kaz in my body..." Helen thought out loud before deciding against it. Instead, the knowledge in the book drew her in, and Helen continued pouring over the pages. A little while later, Kaz walked in, wrapped in a towel. "How was the shower?" Helen asked without looking up from the book.

"Gooooood." Kaz replied with a content grin. "Any new spells?"

"Yeah, a few. Like this one." Helen said before chanting something. "What'd you do in the shower, Kaz?"

"I masturbated, and got off three times before using the body wash. Your boobs felt nice covered in soap, so I masturbated one more time after that." Kaz said robotically. "Helen! I-I..."

"I'm not surprised. You're not exactly quiet, luv." Helen said with a grin. "Were you always this perverted?"

"No. I've only felt like this in the past day or so." Kaz replied in a monotone voice. "Can you stop that?!"

"Maybe. How about a different spell?" Helen joked as she raised her hand. Chanting another spell, Helen giggled. "Give it a few."

"For WHAAAAT?!" Kaz grunted as she buckled over, gripping her stomach. "I'm-I'm on FIRE!!" Kaz shouted as her hips straightened, her hair got shorter, and her chest got flatter.

"Wowwwww." Helen muttered as she stared at her body. "I make a cute boy."

"Boy?!" Kaz shouted with a voice crack. "Is that what you did to my-your body?"

"Yes. I thought of a way to bend my little rule." Helen explained before casting it again. Instantly, Helen grunted as Kaz's body felt like it was on fire. Groaning, Helen clamped her eyes shut as Kaz's body shifted. First, her ass jutted out and got larger, followed by her hips with a loud crunching sound, then the facial hair retreated as Kaz's hair lengthened to his shoulders. With final groan, Helen felt her borrowed chest expand as the pain ended.

"Whoa." Kaz said as the towel finally fell, revealing an erect penis. "You're-Adam is gorgeous..."

"Really?" Helen asked as she walked over to the mirror. "HE'S BIGGER THAN ME?!" Helen shouted, cupping Kaz's transformed chest.

"Helen can we..." Kaz grunted as she mindlessly stroked her cock.

"These are bigger than Mum's too..." Helen complained before noticing Kaz in the mirror. "Raring to go, aren't we?" Seeing Kaz nod, Helen giggled. "We'll have to see to that, won't we?" Helen teased...