Flashback: Craving for big cock

The wish and desire for a big cock had given Adam the willpower to take the remaining pills.

But with his eyes transfixed on his sister's thick 13 incher, the pills instantly seem to have an effect on an mental level. They amplify his desire for a big cock, turning it into a longing, turning it into a craving. Adam craves his sisters big juicy cock, that had brought him the most amazing orgasm only moments ago. He craves his sisters cum, intoxicating and addictive. Adam is again completely under the spell of his sisters huge cock.

He quickly moves back to the bed and falls to his knees in front of Sarah's thick 13 inch cock, so that he can worship it. Adam starts to kiss it, lick it, lap up more and more precum. Soon Sarah's whole cock is slick with his saliva. Adam continues to stroke the shaft, trying to make it produce more and more of the addictive substance. Adam wants to taste more. He lowers his mouth on the angry red cock-head, and starts to suck it, to taste the sweet nectar straight at its source.

Soon, he tries to suck in more of its length, but that only causes him to cough and gag. Sarah's cock-head seems too big to fit, his attempts start to induce pain in his throat. But his desire for her cock, further amplified by the pills, is too strong. Adam does not stop his attempts to take in as much of this magnificent cock as possible. He redoubles his efforts, even forcefully. Through his continued stroking of the shaft and his effort on the head, the precum now flows freely, wetting his mouth and throat. The scent, taste and smell of the precum all further arouse Adam, and even seem to energize him. Easing the pain, giving him the ability to keep going. Soon, he manages to take in several inches.

After deepthroating more and more, Adam realizes that he has not yet managed even half of his sisters wonderful fuck-stick. Upon this realization, his own cock is painfully hard with arousal, and a pressure is building inside him, that he has never experienced before. But Adam has no chance to think about this, as the only thing that matters now is to worship his sisters huge monster. Adam cups and squeezes Sarah's ball with one hand, using his other to stroke her lower shaft. As Adam continues to bob his head up and down her upper shaft, he can feel it pulsing against his tight throat, and he can hear Sarah's breath quicken. Her body starts to squirm and writhe in pleasure, and her moans are getting louder.

Encouraged by his sisters pleasure, he continues to try taking more of her cock. After having managed to take down another inch, he can feel Sarah's cock getting even thicker, or his throat getting tighter. Sarah is now moaning loudly and lets out small cries of pleasure. Adam can feel the cock pulsating in his throat. While holding the shaft swallowed, massaging it with his tongue and throat, he starts to stroke the shaft with both hands violently. He can feel Sarah's orgasm approaching, and at the same time his own. Having himself impaled on almost half of her cock, he can hear Sarah cry out loudly. This makes him look up, and to his surprise Sarah's eyes shoot open, staring directly in his face. He can see a look of desire in her eyes, and hunger.