Sarah gets more than she bargained for

While they made out, the delivery girl's hands often found their way back towards the dickgirl's growing and hardening bulge. And although the tool in question still wasn't even close to being fully erect, the constriction and pressure of the tight hot-pants already grew slightly uncomfortable.

When the girls finally interrupted the kiss, only to catch their breath, Sarah could see the desire and hunger in Caroline's eyes.

"Is it fully hard yet?"

"No, not yet..."

"Hmm, now i really want to know how big this thing can get."

"Good, because i need to get out of these shorts. They are getting really tight. Common, let's head upstairs."

Hand in hand, the girls hurried up the stairs and entered Sarah's room. When the in comparison taller blonde turned around again to face her guest, she was in for quite the surprise:
She was literally pounced upon by Caroline, and was being toppled and sent falling over onto her bed, landing flat on her back, with the delivery girl landing on top of her. Specifically with Caroline's crotch on top of the dickgirl's bulge. Showing an aggressive side that Sarah couldn't have anticipated, the smaller girl kept the momentum and proceeded to open the frontal knot of Sarah's skimpy top with no delay. Setting free and revealing the two glorious mounds of abundant flesh that were Sarah's enhanced tits. Only for Caroline to immediately dive in and attack the soft orbs with ferocity, drawing moans of pleasure with every single touch.
Spurned on by this favorable reaction, her hands sank deep into the soft flesh, kneaded and massaged the bountiful orbs, and in addition her mouth alternated between them, kissed and suckled on the already very stiff nipples.

"I can't believe how lucky you are. To have such large and beautiful breasts... my boyfriend barely recognizes the existence of my meager A cups. I'd kill to have tits even half your size." Caroline took a second to compliment, but immediately continued to focus on her victims pleasure.

Sarah had been well aware that her newly enhanced breasts were quite sensitive, but this dedicated worship made her realize that the sensitivity of her large pillows was off the charts. Caroline's seemingly unending **** left her no chance to retaliate, and all she could do was to moan in ever growing lust. With her own arousal increasing further with each moment, and especially when Caroline started moving and rubbing her crotch over the futanari's hardening bulge, Sarah's pussy was overflowing with juices, and her pants slowly got drenched with the precum of her member, spreading its intoxicating and arousing scent. She felt like she was completely reduced to nothing else but a moaning mess.

Of course Sarah's cock didn't stop it's growth under this very blissful treatment, even though it was severely restricted and constricted by the denim fabric of the skin tight hot-pants. And while she was still in heaven and ecstasy from the expert handling of her tits, soon there was simply no space left for Sarah's extra large appendage to grow into, and the pleasure began to turn into discomfort and pain. A pain that she couldn't ignore and gave her strength to utter a few barely coherent words between her sighs and moans.

"Please... hmm... get off... ahhh... my pants..."

But Caroline was too busy and preoccupied with taking care of the bewitching and breathtaking knockers below her, so that she didn't notice Sarah's discomfort, and only playfully mocked her: "Why, you don't like to be on the bottom? Don't you enjoy having your juicy tits played with?"
Only to take her efforts to the next level, to grope with extra **** and then to tenderly bite down on Sarah's thick and swollen nipples. But this was finally enough to take Sarah over the edge. She was coming just from having her "Growth X" enhanced breasts played with!

While her whole body was shaking, all she could do was to cry out in ecstasy. She was familiar with the flood of sensations down her pussy, but the reaction of her girlcock was still new to her. The ever increasing pressure and pain on her constrained dick was already immense, but with her orgasm rippling through her, she felt like it still increased a hundredfold further.
She could feel her balls pumping, she could feel her shaft throbbing against Caroline's crotch. And she just knew sperm was shooting up and filling her length. But it simply had nowhere to go. Sarah whimpered in discomfort, instead of relieve and pleasure that was supposed to wash over her, she only got increased pain, as her balls kept pumping and her shaft engorged and expanded even further under the tight and straining fabric of her shorts.

Until she heard the loud sound of the denim fabric ripping.

Her massive cock now had the room it needed to expand, and Sarah could finally feel the relieve that she deserved, as she cried out yet again, while her cock continued to throb and twitch with forceful spurts of cum, and her pain faded.
With every heartbeat not only a new spurt of jizz erupted and shot out of her piston, but free of its constriction her rod filled out and grew more and more, until it had managed to grow to it's full and truly astonishing size.