Kat ran her fingers over the egg, mumbling incantations while studying her book of spells.
"Okay! Hatch!"
The egg started to crack. Dan could suddenly move his arms again and punched against the inside of the shell. He struggled and pushed. Kicked and punched until finally he was free.
Kat just stood there smiling. "Well?"
Dan looked at himself. He didn't look any different. "Is that it? All that hocus pocus and grand standing and this is what you do? You're such a f..nggg"
Dan felt a strong pressure near his ass. He had to poop, really bad.
"I'm sorry Daniel, I didn't quite hear what you wanted to say." His sister said smiling.
"I..ngg" He really needed to go right now, but he couldn't move. If he moved he would crap his pants, what had his stupid sister done to him. Meanwhile, his pants were getting tight. He was getting an erection and his pants were hurting him. He desperately tried to take them off.
"Here, let me help you with that." She waved her hands and his pants disappeared.
His dick had grown, it was huge. Reaching to his knees even. Worse, it was getting erect. Growing to a size close to his own arms in length with tennis ball sized balls below that. But he had no time for that now, he needed relief.
"Just push Daniel. You'll feel much better."
"Wha...d..nngg" He couldn't hold it in anymore. He squatted and pushed.
It didn't feel like pooping at all. He pushed. It was much harder. His hands felt around his ass, there was nothing near his anus. His hands slid lower. There, right behind his balls. His fingers found moisture, slippery and sticky and through that a smooth hard surface. He pushed and the smooth object came further.
"You go bro!" His sister crowed.
Dan pushed again, he felt a new pressure growing. He pushed again.
His eyes went wide. His dick exploded with cum as he came, while an egg popped out of his new hole into his hands.
Panting he glared at his sister. "You" "Made" "me" "lay" "an" "egg"
"Yes, that's what your new vagina is for."
"Vagina?" His hands slipped between his legs. Right behind his balls, still dripping with feminine juice he found the sensitive folds of his new pussy.
"You bi..ngggg" The strong pressure returned. He needed to poop again.
He crouched and pushed and pushed until another white egg plopped out of his vagina. Cum splashed from his monstrous cock on the ground before him.
He crashed to the ground, completely spent.
"You'd better clean that up before mom comes home." Kat said smiling as she pointed at the cum stains on the floor.
"You stu...GNNN" The strong pressure reared it's egg shaped head again. He quickly got up in squatting position and pushed.
With an audible plop another white egg dropped on the floor below him while cum sprayed the floor before him. It felt so good.
"Guys are so stupid. Look, I'll spell it out for you. You can't be mean. If you are, you will lay an egg and make a mess. If you're nice I might turn you back. Be more annoying and you'll find the other things I did to you."