Flashback: Adam remembers

After a short time of recuperation, Adam looks down at his own crotch: His jeans are drenched. He had never cum that much, he did not even know that he could cum that much. He decides to strip and lose the stained jeans and underpants. Now he can see his own 4 inch dick. It is still erect after his orgasm, that never had happened before either. Still, it is puny compared to his sisters huge cock, a glorious larger than life 13 inch monster. "Fuck!". The pills had worked, and had given Sarah the cock Adam had always dreamed of.

The pills had worked. "The pills, of course!". Adam had almost forgotten them, but now quickly moves the few steps back to Sarah's desk, and takes the open bottle with "GrowthX" pills in his hands. He counts the pills and determines that 7 remain from the original charge of 20.

His eyes go back to Sarah's huge cock. Big apple sized balls. 13 inches of glorious meat. Thick veins pulse red on its surface. The shaft glistens with his saliva, its angry cock-head is slick with precum.

Quickly Adam empties the bottle in his mouth and while he swallows all the remaining pills, his eyes remain fixed on his sisters monster. His own cock is painfully hard again, and he begins to feel a new arousal, stronger than he had ever known before.

Adam wanted to have cock like that! But he also wanted his sisters cock, right now!