Title: Product Testing
Author: nolagal
Based On/Inspired By: We Test All the Products Ourselves by wallflowergirl
Characters/Pairings: George/Fred (Girl!Fred)
Rating: NC17
Content/Warnings: Genderswap, twincest, mentions underage sexual activity
Word Count: 1750
Summary/Description: George's new product is making Fred reevaluate their relationship.
Author's Notes: It was so hard deciding what to choose for this month's challenge, but I've loved this piece ever since I first saw it and couldn't resist writing about it. Major thanks to luvscharlie for the speedy beta!



"Are you ready? It's going to be brilliant. I have it all worked out."

Fred gave his twin a smile, but found he couldn't bring himself to be excited about this particular product. He'd been the one to come up with the idea, and at the time, it had seemed particularly fantastic. If it worked, this had the potential to be a real profit earner for their new store.

But none of that was causing the rolling of Fred's stomach and the slight fear that had gripped him ever since George announced it was ready for testing. It shouldn't be different than trying a Puking Pastilles or a Patented Daydream Charm, but neither of those had kept him up all night with worry.

George seemed nonplussed over the whole thing as he stood watching Fred impatiently, clipboard in one hand and the other outstretched to Fred. Fred took the small banana from George and bit his lip.

"George, I—" Fred didn't know what to say. He felt like they should talk about their relationship, but they never talked about it. At thirteen and fourteen, exploring their bodies together was natural. After all, they did everything together. But as they grew older, Fred had begun to worry that George would want to move on, find someone else. It would be understandable, they'd never been with another person and in particular, they'd never been with a girl.

That was what made this new product seem so dangerous. There was no doubt in Fred's mind that if the Gender-Bender Banana worked, he and George would be shagging. They had always found a sexual element to the products before, and curiosity would surely overtake them once more. But this wouldn't be Fred and George, this would be George and a girl.

"Don't you trust my inventions?" George asked, raising an eyebrow.

Fred shook his head and closed his eyes; he didn't want to look at his twin any longer. Taking a deep breath, Fred popped the banana into his mouth. Rather than a sweet banana flavour, it tasted pasty and dull. Fred opened his mouth to say so when he felt his insides twist and churn.

It wasn't as bad as Polyjuice potion, but the experience wasn't pleasant either. His body stretched and shifted for a long moment before it settled. Fred tentatively raised his hand to his face. The stubble was gone from his chin but, otherwise, it didn't feel much different. His hair was the same, and Fred wondered if they should add something that'd make hair change as well, but he figured lots of girls had short hair so it wasn't a big deal. He'd bring it up with George later.

"Take off your robes," George said excitedly.

Fred's hands shook as he reached to undo his magenta robes. He could feel the mounds of flesh curving from his previously flat chest and knew without a doubt the product was a success.

George's sharp intake of breath surprised Fred, and he opened his eyes to find George staring in curiosity, confusion, and lust. Fred looked down at this foreign body. The breasts weren't too large and he touched them gingerly, interested to see what the fuss was all about.

"How do you feel? Any side-effects so far?" George asked, quill poised even as his eyes darkened as they followed Fred's hands.

Fred couldn't bring himself to speak yet, though he wasn't sure exactly why, so he just shook his head. His hands drifted off of his new breasts and down his flat stomach to his curvier hips. This was the part he was dreading. Fred thought it was probably every bloke's nightmare to have his cock missing, and even with all his other worries about this little experiment, his mind churned in horror over his missing penis.

The hair he found was thick and wiry just like always, and Fred looked down to see his familiar ginger curls only there was no cock nestled happily in them, nor any balls hanging below. Instead, there was nothingness, just a hint of what was now between his legs.

Fred parted his legs and ran his hand over the unfamiliar terrain. His fingers dipped between the parting flesh and a shiver of pleasure went through him. He ran one finger up over the small nub again just to feel more before letting his hand explore further down. The hole he found was wet and warm, but felt so foreign as he let one finger slip inside.

"Do you reckon you're a virgin now that you're a bird?" George asked with a laugh.

Fred couldn't help laughing as well, even though he felt himself blush at the idea. He hadn't considered himself a virgin since George had first fucked him back when they were sixteen. Trapped in this new, strange body, he felt unsure and self-conscious in a way he never had with George before.

"I reckon we better test this thoroughly," George said, putting the clipboard down on the counter and moving closer. George slipped off his own robes, letting them fall to the floor as he lifted Fred onto the counter. Fred went along with the motion, even though he really couldn't bring himself to be excited yet.

Fred braced his hands on the edge, letting his tension pour into his tight grip. George was grinning as he moved in for a kiss.

There was no difference in kissing that Fred could find. George's lips were as firm and insistent as always, and in no time, Fred relaxed in the familiar motions of their mouths. Having that same spark of excitement and love that was always between them was reassuring even as George's hands began exploring Fred's new body.

"Does this feel weird?" George asked as he ran his hands over Fred's breasts.

The touch was light and had Fred arching his back to feel more of the soft sensations. "Feels good. Sort of like it usually feels just more sensitive."

"Wonder if that's a side effect or if it's normal for girls." George pulled back for a moment to make a note on the clipboard then moved his mouth to where his fingers had been.

As George sucked one nipple and ran his fingers over the other, Fred gasped. His nipples had always been a source of pleasure before, but this seemed so much more intense. George took his gasp as encouragement and sucked hard enough to hurt, but it felt so good, Fred wasn't about to complain.

George's hand drifted lower, rubbing between Fred's legs. Fred could tell he was wetter now as George's fingers slid over him. George teased the opening, barely inserting a finger before circling around it.

"Guess we don't need lube," George said, pushing his finger farther inside. "It feels so different but still feels like you."

Fred nodded, understanding what George meant. He moved a hand up to pull George's mouth back to his. Fred's lips pushed against George's, demanding and hard as Fred sought to claim his brother.

George's fingers were moving inside Fred now, stretching and scissoring in a way Fred could feel wasn't really necessary but still felt good all the same. He moaned against George's lips and rocked his hips, ready for more.

George pulled his fingers out and brought them to his lips. Fred watched as George licked the glistening moisture off. George seemed to be concentrating on the taste, and Fred's own curiosity got the best of him and he leaned in to lick George's fingers as well.

"Doesn't taste like you," George whispered, his breath ghosting across Fred's lips.

Fred licked George's lips. He didn't know what it was, but his whole body reacted to the knowledge that it was him he could taste on George. It wasn't some strange girl, it was him.

George groaned and pressed closer to him, lifting Fred's legs until his cock finally came to rest against Fred. It took some shifting and a few tries before George slid inside.

The stretching and full sensation was similar but as George continued moving, Fred knew it was completely different. The only pain was sharp and sudden as George buried himself to the hilt. Fred cried out and George froze until Fred nodded when the pain faded away.

George moved slowly at first, clearly getting used to the new sensation for both of them. Fred rocked his hips, looking for more until, finally, they were aligned just right. The waves of pleasure as George slid past a particular spot reminded Fred of his prostate, but it was different, not as intense until an increase in speed meant George was pressing against that nub Fred had found earlier.

"There, more," Fred gasped, moving one of his hands off the desk to touch himself in that special spot. The orgasm that tore through him took him by surprise, and Fred shuddered and moaned as George continued to move inside him.

George's motions were faster and more erratic as Fred felt himself contracting around George's cock. As they continued to move together, Fred felt the pressure building inside him again, a warm tense wave. The second orgasm was softer but Fred felt like the rolling pleasure might never stop.

George shuddered above him and Fred could feel the warmth inside him as George's orgasm blended with his own.

When they finally pulled apart, George was staring at Fred in a way that made Fred self-conscious and aware that he was not himself. He turned away from the scrutiny and reached for his robes, suddenly eager to be covered.

"Well, that seems to be a success." George's voice was hoarse and quiet, just like it often was after sex.

Fred nodded, keeping his back to George. "Now we just need to see how long it'll last and make any adjustments." Fred could hear the tension in his voice. Now that the aftereffects of the sex were wearing off, the uncertainty and fear began to fill him once more.

"Fred—"

Fred turned to see George biting his lip nervously. George reached out and pulled him into a hug.

"It feels weird, huh?"

For a moment, Fred thought George was talking about the effects of the experiment, but then he realised what George meant. "Yeah. Did you like it better?"

George looked into Fred's eyes. "No. I liked that it was you, and it felt good, but it wasn't right."

Fred let out a breath he hadn't known he was holding. "Me too. I just thought you might find out you like birds better."

George laughed and gave Fred a quick kiss. "How can I like anyone better than you? After all, you're just like me, and everyone knows I'm perfect."

Fred laughed in relief. The small part of him that had worried floated away as he realised there would be no one else for him or for George. A sharp twinge went through him as he felt the effects wear off. Fred sighed as his body returned to normal. He couldn't help reaching down to palm his cock, reassured as he felt it's warm weight once again.

"Better let me see if there are any lasting changes," George said, tugging on Fred's robes. "I think this will require a thorough inspection."

Fred grinned and shrugged off his robes once again. Maybe the whole being a girl thing wasn't so bad as long as he still had George when it wore off.