Genderswap, Male!Natasha and Female!Loki

"Loki, what the hell is this?" Natasha asked, her voice much lower than usual, huskier, as she looked down at herself. Well, he looked down at himself. "What the hell did you do to me?" He looked over everything, from his hands, now larger though still calloused and strong, to his lean, muscled stomach, muscular thighs, and pulled at the short, bright red hair atop his head.

In front of him Loki stood, smirking as he took a slow turn around the newly male Natasha. "You always said that you wanted to know what it would be like to be me. I obliged."

"I meant to have powers and be a god-not a boy," Natasha growled, his hands fisting as his eyes narrowed. His whole body vibrated with the anger before going taut as Loki started changing in front of him. Where Natasha's boyfriend had once stood a curvy, tall woman took his place, eyes lidded, deep green and matching the thin jade lingerie that barely covered her. Natasha's breath hitched in his throat, any sort of anger disappearing from his body as quickly as it had come.

"I thought we could give this a try," Loki purred, her voice just as sensual and soft as her masculine counterpart. With swaying hips she walked towards Natasha and eased a hand down Nat's jeans, making the ginger man gasp and reach backwards for something to grab onto, anything to help him gain his footing again. It was the oddest sensation, feeling himself grow hard and heavy in Loki's well-trained hand, now stroking his length in earnest before unzipping his jeans and yanking them down.

Nat's eyes widened as he caught sight of how big he was. "Really, Loki?"

"As if I would you fuck me with anything else but the best," Loki chuckled, sinking slowly to her knees, licking her lips as she stared up at her boyfriend. The image sent Nat's thoughts flying elsewhere, watching how Loki's heavy breasts heaved in her eagerness to take Natasha in her mouth.

"You never hear me complain, do you?" Natasha quipped, glad that at least he managed to get that jibe out before Loki's lips pressed to the tip of his head. Oh, God that felt so good.

"Excuse you?" Loki asked, eyes flashing as she quickly pulled away, Natasha's words registering. "I am more than adaquately endowed-."

"You talk too much," Natasha said, reaching forward to grip Loki by the back of the head and guide her onto his cock. Hey, when their roles were reversed Loki did that to him all the time so it was only fair. The goddess seemed to think the same thing as she moaned around Natasha's length, stroking it with her tongue, swirling it around his head before taking him all the way in. Natasha swore, his head tipping backwards and eyes slamming shut as wave after wave of pleasure washed over him. How was it that Loki kept from coming so quickly when it felt so good? Gnawing furiously at his bottom lip, he pulled away from the warm, wet heat that was Loki's mouth with a low groan that he heard echoed in the woman at his feet.

"You are not making me come that way," he managed to gasp, pulling her up to her feet by the shoulder and pulling her with him to the bed. Loki just laughed, the sound sending shivers down Natasha's spine and going straight to his cock, and when she was pushed back onto the bed she laid there as though she was made for it. Having already stepped out of his jeans, Nat ripped off his black shirt, looking happily down his flat, hairless chest and stomach. Not bad. He still had a few scars left behind, too, the ones that Loki had inflicted one evening out of pure curiosity how Nat would react to the pain.

"I wasn't about to take those away," Loki murmured from her place on the bed, fingers already undoing her bra and throwing it to the side. That grabbed Nat's attention, his pupils dilating further at the sight of Loki's more than ample breasts. Movements slow, Nat crawled onto the bed and stood on his strong forearms and knees above Loki's pale and soft body, drinking her in with a low groan. One of his hands stroked the hot heat between her legs, watching as the goddess's head tipped back and her thin lips parted in a gasp. The gasp turned scandalized when Nat ripped the panties off of her body, throwing them to the side.

"Payback for all the pairs you've ripped of mine," the man growled low in his throat, leaning down to lick and suck at Loki's breasts, leaving purpling marks at the undersides and down Loki's stomach and hips, sinking his teeth into the soft skin just inside the woman's thighs. That made her squeal, somewhat of a laugh and moan at the same time, and Nat filed that away for later use. He'd have to test and see how responsive Loki was there as a man, too. The idea brought a grin to Nat's lips before he brought them to the apex of Loki's thighs, immediately plunging his tongue into her sweet warmth, groaning at the taste of his girlfriend, his goddess. Loki shivered and screamed in surprise, not having expected Natasha to be so, well good at giving as well as receiving, but Nat had had more than his fair share of messing around with women, both on and off of missions. Sexuality wasn't something that Nat had let confine his preferences and tastes, and not to mention he knew what he liked when he was in Loki's place and so used all the energy he could muster into making her scream, forcing her hips to buck and her words to grow hoarse and vulgar with the exquisite pleasure of it. Nat pressed one finger into Loki's cunt, feeling her tighten around his appendage, eliciting a groan from the pair of them. Nat's cock, heavy and leaking, slid against the soft fabric of the bed, the friction just enough to keep his head spinning

"Norns damn it all, would you just get in me already?" Loki asked when she finally got fed up of Natasha keeping her on the edge for what felt like hours. His jaw wasn't even tired, and he grinned up at the disheveled goddess, taking in the high color of her cheeks, the raspy quality of her voice, and before she could get more than: "Honestly, I don't do that-" he'd pulled himself up between her legs and slammed his hard cock into her. Any air Nat had had in his lungs disappeared, sparks flying in front of his eyes as he stilled inside her, willing himself not to come immediately. He had a refractory period to worry about now, though that concern was very far in the back of his mind as he started thrusting shallowly into Loki. The goddess's back was arched, her head thrown to the side as she wailed with his every shift, every thrust, and when he finally got the hang of it and started rocking into her harder and harder, she seized up around him, hips bucking as her come rushed around his cock, warm and perfect. His control, already waning, slipped entirely, and it was the weirdest sensation as he emptied himself into her, jerking hips losing all their finesse and technique as he concentrated simply on riding out his orgasm. It wasn't his proudest moment, but as Loki grinned up at him and leaned up to kiss him hard on the lips, toppling them over so she was on top, he found he couldn't really give a damn.

A/N: Well, that's one of my first times writing sex from a male POV, so I apologize if it sounds incredibly unrealistic; I had to imagine a great many things about it, and if there's something that's incredibly, ridiculously wrong please let me know so I can fix it. Thanks so much for reading!