2 siblings, one curse

Lying on her bed, Sue was thinking about yesterday’s events. Apparently Ben’s condition is now worse than ever, and Jen and her now share a curse that transform them into horny, curvy sluts with an insatiable appetite for Ben’s cock. Another problem was the new effects of the curse. After her intense romp with Jen and Ben, her breasts and her ass had grow. Not a dramatic change, she easily managed to hide her curvier figure with an oversized T-shirt and a pair of sweatpants. Her thin lips were fuller too, but she hoped no one will notice the change.

More annoying was the wetness in her pants and the tingle in her nipples. She had borrowed an old pair of panties from her mom, since hers are too small now. But the slight sensation of something on her dripping mound is enough to distract her.

After a few hours, her arousal had rise dramatically. She tried to resist, fearing the consequences of more sex, but she finally gave up. Soon Both of her hands were thrust into her pents. One hand was furiously rubbing her clit while she fingered herself with the other.

She panted heavily, forcing her breasts against her sweat-soaked T-shirt. She blushed, but couldn't stop herself. But she found that she couldn't find release. She try everything, tweaking her nipples, fingering her ass, she couldn't orgasm.
With a groan, she gave up and went to the bathroom for a cold shower, hoping it will calm her arousal. It barely works but she managed to stay clear headed.

She found her brother in his room, judging by the smell in the room and the bulge in his pants, he apparently had the same problem.

“We need to talk” said Sue, “the curse, the effects are …”
“I know” Ben respond, “I can feel it too, what about Jen ?”
“I tried to call her but she didn’t answer, I suppose she’s having the same problems. I still have the urge to … you know … “she said while blushing.

“We can’t, I think each time we have sex together, the curse gets stronger and we change more. We need to find this old woman and ask her to undone this.”

“You’re right, but I don’t mind keeping my bigger tits” said Sue. “See, I was a B cup and now I have a sexy pair of C cups titties !”

While she talked, Sue had removed her T-shirt and was now exposing her breasts to her brother. She did that on a sudden impulse, as if it was normal to show him her sexier body. A few days ago she’d never do something like that. But now she felt good while doing this. In fact she wanted bigger tits, a good set of D cups will be great, or maybe bigger like Jen’s.

The only problem is that she couldn’t have them if Ben didn’t fuck her. A kinky scheme appeared in her mind. With a smile, she grabbed her brother’s cock through his pants.

“In fact, could make them bigger ?” she asked Ben while squeezing his painfully hard dick.

Ben tried to resist, but he had a hard-on since this morning. He had tried masturbation four times without success. He wanted to stop Sue but when he felt her warm mouth engulfing his cock, he succumbed, hoping he could control his lust this time.

Sue bounced her voluptuous body on her brother’s dick. She had fucking and sucking him for 1 hour without a pause. He had been **** at first but after  firing his wad down Sue’s hungry throat, he had lost all reservations.

Sue’s overstuffed cunt clung to his pistoning dick, making wet noises as it repeatedly stretched her love canal. Ben squeezed and slapped at her huge tits, making them bobble in every direction. He had cum three times already and now sported an huge 12 inches rod with a plump set of balls. The curse had enflamed their libidos beyond all reason.  His mouth latched onto hers, they felt hungry for each other bodies, he was enjoying Sue’s full lips and agile tongue.
The couple was panting like animals while nearing another climax.

"You... know... I...think we should st….. FUCK " Sue howled, gyrating rapidly as the pounding dick gave her a toe curling orgasm. The cum overflowed her cunt when her brother released his spunk into his wanton fuck-toy of a sister.

The panting duo collapsed on Ben’s bed, barely thinking about what to do next, when they heard a feminine voice on the door.

“What the fuck ! “