They use Macy's powers on their brother

Stacy and Macy's brother Jeremy was currently sleeping in his bed. It was Saturday morning, and he had no particular plans for the day. As he woke up, he could feel that he had morning wood. He rolled over to take care of it, but when he touched his dick, something was off. He looked under the covers, and his suspicions were correct; his dick had grown! His manhood was now a foot-long monster, and it was at least an inch thick! He looked down at his balls, and saw that they were the size of tennis balls! Jeremy started stroking his dick, and he found himself soon approaching orgasm. He moaned as he came, and was amazed by his load, which was at least 4 or 5 times larger than normal.

To wash the cum off, Jeremy headed into the shower, which was right across the hall from his room. He stood under the water, and washed the cum off his body. The instant it was all gone, Jeremy began to feel pressure building up in his cock. Without warning, he had another orgasm, firing jizz all over the shower.

"Oh My God!" He moaned as he fell to the floor of the shower. "What the hell's happening to me today!?"

Jeremy got out of the shower, and headed back to his room quickly, his dick still refusing to go soft. He sat down on his bed to compose himself, but then felt the pressure building in his dick once more.

"Oh Shit!" Jeremy moaned as he blasted more jizz across his bedroom. He fell backwards, and laid there as he had the greatest orgasm of his life, hot jizz shooting out of it, and onto Jeremy and his bed.

Macy and Stacy giggled as they watched their brother on Stacy's TV, the two of them cuddled up together in her bed.

"I think I'll leave him like that for a few hours," Macy said.

"That's so cool sis!" Stacy said. She kissed her younger twin, and the two of them made out for a few minutes, before deciding what to do next.