An accident in the dungeons

The Weasley twins cracked evil grins as the ran into the potions room in the middle of the night. They were just exploring, trying to find something new. Fred leaned against a wall and a hidden door suddenly opened. Snape's secret potion lab.

There was a giant cauldron in the middle of the room with a shimmery hot pink potion in it. Pink butterflies flew around the surface of the potion and a fine misty haze rose up in spirals.

"What have we here, brother?" said Fred as he neared the potion. "Has old Snivellus been doing something he shouldn't have?"

"Here, I'll use a spell to grab some of the potion, and then we can examine it..." replied George.

"Good idea."

The twins grinned evilly again as they thought of how they could embarrass the potions master.

Unfortunately, George's spell didn't work and backfired, sending George into the potion, rather than the flask.

"AAAAAAAAAAAAAAAAAAAAHHHHHHHH" screamed George as he hurridly lifted himself out of the sweetly smelling potion.

"Are you alright, brother mine?" asked Fred.

"I sure hope so," replied George looking very worried.

"Let's get back to the dormitory, we don't want to be caught after the mess you just made."

------Next morning------

George walked into the bathroom and suddenly noticed something was different right after he got to the toilet.

He ran to the mirror and his worst fears had been confirmed. The potion had turned him into a girl.

His hair was pretty much the same, maybe a bit longer and his face was definitely a lot more feminine. His mouth had a sexy pout and his eyes were big and almond shaped.

Looking down, he realised that he was now sporting magnificent breasts and a sexy curvy body.

This was not good. Not good at all.

"GEORGE!" yelled Fred from outside the room. "Don't you think someone else might like to use the bathroom??"

"You're not going to believe this, but I'm a girl." replied George in a disbelieving monotone.

He walked out of the bathroom and Fred stared at him with his mouth gaping open.

"Take off your clothes."

"Alright." said George. Why not tease his brother a bit more? (I shall now refer to George as her, seeing as his gender has been changed)

She slipped out of her pyjama top and showed off her magnificent DD breasts. Wriggling out of her pants, she wiggled her ass seductively at Fred.

Fred could feel his member rising and getting harder and harder. He was only wearing boxer shorts so George could clearly see.

George walked across the room and nudged Fred with her side.

Fred gulped and sweat beaded his brow as he desperately needed to jack off.

"Like that?" purred George as she walked over to Fred and placed her arms around his neck. She ground her wet centre on his thigh and rubbed up and down. "Want more?"

"Hell yeah!" yelled Fred, scrambling out of his boxer shorts. George knelt on the ground at level with Fred's cock and swirled her tongue around it. She placed her hot mouth around the cock and swirled her tongue round and round.

Fred moaned and grabbed George's head, pushing down further and further. George felt the muscles tighten and realised that Fred was about to cum. George quickly took Fred's dick out of her mouth and left it hanging in agony.

"Wanna try some virgin pussy?"

Fred lost no time snatching up George and dumping her onto his bed. He aimed his dick at her opening and pushed down. She was so tight!

George groaned as she felt her brother's huge stiff dick slide deeply inside her. She started rubbing her clit, unsure how to in the beginning, but getting hang of it in no time.

Fred gripped George's hips with his hands as he pushed in and out of George, slowly at first, but moving harder and faster with George's yelps and screams.

After a short amount of time, Fred felt a tightening in his balls again and yelled that he was about to cum.

"Cum inside me!" screamed George who was about to cum as well.

Both got cummed at the same time, shaking in passion, their sweaty bodies pressed tightly together. They saw their juices pour out of George's pussy and mingle together on the bed.

Fred slowly pulled himself out of George and got a good look at her heaving breasts, sexy messed up hair and smooth tught pussy. He felt his dick start to rise again.

George got up and saw how much her brother was getting aroused and took his big stiff member in her mouth again, sucking off all her and his juices which tasted bitterly sweet. After a very short time, Fred cummed into her mouth powerfully, more quickly than she could swallow it all. It sprayed across her face and breasts, pouring down her sides.

Fred then forced her to lie down and started licking all his juices off her, paying special attention to lick and suck on those magnificent breasts until the nipples swelled and became rock hard.

George moaned and started rubbing her clit again. Fred started fiercely kissing George who rubbed her clit harder and harder.
Fred then stopped kissing and bent over George's pussy. He stroked the swollen nubs and started tongue fucking her.

George almost screamed with passion and cummed into Fred's mouth, juices running down her legs and across Fred's face.

They finally lay with their legs entwined, wrapped together tightly staring into each others eyes until the fell aslepp, exhausted, but hardly able to wait until they could do it again.