Chapter Text
Research topic:
“See, the thing is that ingesting a full load completely negates the refractory period, but also makes me a caveman. On the other hand, touching a few drops just makes me kinda horny, so what we want is to find the perfect balance of a short refractory period and staying in control of myself.”
Loki grunted. “You talk too much, Stark.”
Tony grinned unrepentantly. “That’s not what you were saying last night when I was shouting your name.”
The god looked like he was barely managing not to roll his eyes, and settled for shutting them instead, hips rolling involuntarily as Tony’s fingers continued to stroke almost idly along his shaft.
“We can bet on it. Winner gets a blowjob anywhere, anytime he wants,” Tony announced triumphantly. “You can’t tell me that doesn’t turn you on.”
Loki sighed.
Method:
“This is most undignified,” the god complained, looking distinctly sulky as he stood at the end of the bed, jerking himself off with quick, efficient motions.
Tony sat cross-legged to the side, out of the line of fire, bouncing slightly in excitement. His cock was flaccid between his thighs, having emptied itself just a few minutes ago.
“Aw, come on, Lokes, don’t you want to know more about how this works?” he wheedled, with all the confidence of someone who knew he was going to get his way anyway. “This could totally rejuvenate our sex life!”
“Our sex life,” Loki growled somewhat jerkily, “as you put it, hardly needs rejuvenation.”
“If you don’t hurry up, I’m gonna get hard again and all your effort will go to waste,” Tony pointed out, in a sing-song tone. “You don’t know how good you look right now.”
Loki shot him a glare, even as a sharp exhalation abruptly escaped and semen splattered onto the once-pristine white sheets.
Immediately, Tony scrambled onto his knees and shuffled forward, swiping a finger lightly through the warm patch of viscous liquid.
“Mm.” He closed his eyes, feeling the low, almost-familiar hum of desire begin to snake through him. The bed dipped to his left, and he felt Loki’s sharp chin come to rest on his shoulder, one hand sliding slowly over his side and down to his groin.
“Not quite there yet,” the god informed him fussily, as if he couldn’t tell on his own.
“You seem pretty invested all of a sudden,” he said, a little startled at how husky his voice sounded.
Loki chose not to respond, only tapped at the head of his still-soft cock with pointed impatience.
He trailed a second fingertip through the semen, feeling it drip down between his fingers, tipping his head back against Loki with a strangled-sounding moan. This was worse than feeling aroused and being hard – at least he could do something about being horny if he actually had an erection.
Without waiting, he coated a third fingertip in the rapidly cooling liquid, and immediately, he swore that he could literally feel the blood rush downwards, leaving him light-headed with need.
“Ah.” Loki sounded supremely satisfied to feel Tony rapidly swelling in his hand, his head dipping to nip sharply along Tony’s neck.
“Hold on,” he gasped, very much needing to be more than half-hard. “One more, let’s go with magic number four.” He reached out blindly, dipping a fourth finger and clenching his fist, smearing his palm with stickiness – and yup, he was hard as hell now.
Results:
Without even the slightest bit of warning, Loki bit down hard on his shoulder. Tony let out a strangled yelp, jerking in the god’s hold, only to find himself being pushed down onto the bed, thigh landing on the cool remains of Loki’s come – which, ew.
“Be still,” Loki ordered, the corner of his mouth slanting upwards in a decidedly playful smirk.
“But you bit me!” Tony complained, pouting half-heartedly even as he stilled his uncomfortable squirming. Most of his attention was focused on what Loki’s hand was doing, and the way the god was positioning himself carefully over Tony.
The way he slowly sank down, hole still very slightly loose from their previous round, but freshly slick in a way that could only be attributed to magic.
“Enjoying yourself, aren’t you,” Tony grumbled accusingly, fists clenched in an effort to stop himself from clawing at the sheets. Loki continued to look calmly amused, the muscles in his thighs contracting hypnotically as he lifted himself slowly on and off Tony’s straining cock.
“Kiss me,” he said sharply, wrapping his hands around Loki’s neck as the god acquiesced easily, bending enough for their lips to meet in a way that bordered on violent. He tangled his clean hand in Loki’s hair, holding the god in place as he thrust his hips upwards, his groan raw and muffled.
The first thrust obviously took Loki by surprise; their lips parted ways messily, still trailing saliva as the god jerked forward over Tony with a short gasp. Then he wriggled backwards, pressing into the uncontrolled force of Tony’s motions, grinding back with a low, pleased whine.
He knew that he was being rougher than he usually was, but Loki’s expression was open and uncontrolled, set with wild pleasure as Tony slammed in and out of him as fast as he could humanly manage.
Tightening his grip, he wound his fingers through the thick black locks, fixing his eyes on Loki’s face. The god looked distantly intent, rubbing his own erection against Tony’s stomach in time with each thrust. The friction of their dry skin sat on the verge of pain, but Loki hardly seemed to notice, caught up in chasing his own pleasure.
“You gonna…come?” he murmured breathlessly.
Loki’s gaze slid up to his, his eyes suddenly very green. “Should I?” he purred, laying a hand on Tony’s chest, long fingers splayed out possessively.
“Come on me, and you’re the one who’s going to have to deal with it,” Tony retorted, slowing to catch his breath until he was pressing into Loki with long, languid strokes.
The god laughed at that, light and fleeting, and Tony felt his own expression soften at that single moment of vulnerability. He pulled Loki down for another long kiss, this one deeper and slower, before the god nuzzled into his neck and he felt the graze of teeth against his skin.
“Didn’t know you were such a biter,” he muttered, amused, letting his eyes fall shut and leaving Loki’s undulating hips to drive him to orgasm. He was still undeniably hard, but the hot burn of animal lust had faded by now, his hand crusted with dry grit.
Loki rode him lazily, clearly taking delight in almost tipping him over the edge before dragging him back fighting and cursing, balls tight and aching. He finally spilled when the god sat fully back on his pelvis, clenching rhythmically around him with that incorrigibly wicked smirk lighting his face.
Loki clambered off him a moment later, and Tony heard the god’s quiet gasps as he came on the sheets, feeling him shake through the foot hooked around Tony’s calf.
When Loki returned to his side, head meeting the pillow heavily, he slung a leg carelessly over Tony, and he felt the wetness of his own come streaking the inside of the god’s thigh.
“We should go take a shower,” he sighed, shifting closer and flinging an arm over Loki’s chest.
“We should,” Loki agreed solemnly, fingers kneading lightly along the curve of Tony’s shoulder. He could tell by the stinging ache of the touch that the god was tracing the bite marks he had placed there himself.
They lay there in silence for a long while more anyway, drowsy and contented, until finally the thickening musk of sweat and sex chased Tony right out of bed and into the bathroom, with Loki padding along after him.