Jack arched against the bed, lowering his arms from Mark's face to tightly flex before his chest as he rode out the muscle stimulator. Mark grinned down at Jack, feeling more than a little turned on from grinding his hips against his.  He loved seeing Jack so tense and so utterly turned on. Jack's body started to relax, allowing him to pant out stubbornly.  "Give me a reason why I shouldn't zap you for that! That was a dirty trick, Mark." Mark leaned down to brush his lips lightly over Jack's, answering in a deep voice that dripped with heavy lust.  "I don't have one." Cupping Jack's cheek, Mark gently pressed his lips to Jack's.  This time Jack wrapped his long arms around Mark's bare shoulders, bringing him closer until they were chest to chest. Mark let his free hand slide down Jack's bare side, avoiding the stimulator pad. Then down along Jack's thigh to his knee, where he pulled his leg up to rest it alongside his hip.  Jack broke the kiss with a sharp gasp, when Mark tightly squeezed his ass and grinded his hips against his in slow teasing thrusts.  Jack's fingernails dug into the backs of Mark's shoulders, kneading him practically to the bone in his lustful urges. Mark buried his head into the nape of Jack's neck, continuing to grind him into the mattress.  Jack moaned softly at first, then suddenly tensed up under Mark as he wailed out.  "MAAARK! OH GOD! I can't do this! OH FUCK!" Mark grinned wickedly against Jack's throat, showing him little mercy as he started nibbling at a sweet spot along his throat. 

Jack jerked up with a pleasurable yelp. Resting his head against Mark's shoulder for one a quick second, before sinking his teeth into his flesh. Mark hadn't expected him to do that and groan loudly in pleasure. It was well worth the shock he received from the collar. Mark's body tensed up and his eyes rolled back as he rode out the shock and the sweet pressure from Jack's love bite. It was becoming harder to keep himself from activating the collar.  Jack relaxed back against the mattress, panting up at him breathlessly.  "Have you enough yet?" Mark stared down into his stunning blue eyes, shaking his head slowly.  He had only just begun. Jack swallowed with a curt nod, exhaling out softly.  "Ya, me neither."  Mark leaned back in, pressing his lips back against his ear. When he was sure that his warm breath was bathing Jack's ear, he whispered to him so very sweetly in a deep honey glazed tone.  "You're cute when you think that you can hold out longer than me." Before Jack could protest, he proved his point by quickly removing his hand away from his ass to lightly squeeze his nipple between his thumb and index finger. Jack squealed right into his ear, almost blowing out his hearing, but damn if he didn't love how high he could make Jack's voice rise.  This time Jack lunged for something by his feet. By the time Mark saw it, it was too late. The button had been pressed.  

Mark arched over Jack, groaning loudly as the voltage surged through him at its highest setting.  It wasn't his favorite setting, but he could tolerate it. The thing that made it better was feeling Jack's lips on his sensitive nipple. No sooner had the voltage stopped, Jack pried a loud moan from him by sucking on his nipple until it perked up for him. He regretted ever telling Jack that he had very sensitive nipples. When the softer zap from the collar passed, Mark quickly shot up onto his knees. Jack giggled at him, biting his lower lip as he watched him fiercely grab onto his grey sweatpants at the waistband. Yanking them down to reveal his long pale legs, Mark tossed them off the bed. Spreading Jack's legs, Mark leaned in to kiss a spot high up on the inside of his thigh. Right where he knew was sensitive and sweet. Jack arched against the mattress, his hands rising over his head to clutch the headboard tightly. Mark kept his eyes on Jack, while reaching for the second muscle stimulator.  Jack moaned softly, spreading his legs wider for him as he purred out.  "Oh ya... Don't stop. That feels so good."  Mark couldn't resist a chuckle, which drew Jack's attention to what he was doing.  

The second he saw the second stimulator, he tried to sit up as his voice hitched out loudly.  "Mark! Don't you fucking dare!" Mark raised a hand, preparing to push him back down. Only to have the stimulator kick back on and send Jack back down for him. Very quickly, Mark attached a pad to each of Jack's inner thighs, setting the remote to level 8. He even made sure that the timing was perfect. The moment the first stimulator stopped, he started the second one. Jack's legs rose off the bed gripping Mark's hips tightly on their own as Jack wailed out under him.  "OH FUCK! Mark, I can't! It feels weird! OH! OH! AAAAAARGH!" Jack's arms shot back up over his head to grasp the headboard and Mark savored the look of Jack looking so helpless. When Jack's feet lowered back to the mattress,  Mark licked his lips and slid over him to gently suck on his perked up nipples. Jack moaned softly, his hands trailing through Mark's long red bangs to his exposed back. From there, Jack's slender fingers slid down his sides, wedging their way between their bodies to unbutton his jeans.  

Mark sat up only long enough to help push them down his legs and kick them off, before diving back across Jack. Now when he grinded against Jack's hips it was three-times harder to keep his own groaning under control.  He was getting harder just thinking about how there was only a thin layer of cloth keeping him from getting Jack to really stretch his vocal cords. Mark tilted Jack's head up with the tips of his fingers. Brushing his thumb over his soft lips, he whispered huskily to him.  "Open." Jack's lips parted slowly, allowing him to slid his thumb into his mouth. Sliding the pad of his thumb over Jack's warm wet tongue, he coated it in his saliva until he was satisfied. Mark bit his lower lip as he slowly removed his thumb, feeling Jack's warm breath puff over it. Without looking away from Jack's glazed eyes, he brushed his wet thumb over one of Jack's nipples.  Jack hissed through his teeth, his nipple perking up as the stimulator started up again. Mark watched Jack's muscles tense up under his skin. Something about it was so sexy that he couldn't look away. His eyes slowly drifted down Jack's body, savoring the way he panted heavily and the way he slightly shifted his body when he moaned. 

Mark found himself reaching between them to fondle Jack's cock over his soft underwear. He wanted more. Jack jerked, arching his back as he screamed out loudly.  "OH FUCK! DON'T!" Mark ignored his plea, continuing to stroke Jack's growing desire. Nibbling at Jack's flesh here and there caused Jack's hands to slam against the headboard. Turning his moans to blissful grunts as one stimulator faded out and the other started up. Mark licked his dry lips, watching Jack's seemingly unyielding agony. Jack lowered his back down onto the mattress, turning hazy eyes on Mark as he snaked his slender fingers down into Mark's underwear to give him a taste of his own medicine. Mark's cry of pleasure was cut short when more volts flared along his neck from the collar. Then while Mark flinched over him, Jack trailed light fleeting kisses along his jaw to his ear where he purred out suggestively.  "Does that feel good? Do you want me to keep going?" Mark nuzzled into the nape of Jack's neck, groaning out against his skin.  "Oh, god... Don't stop, Jack. Go faster for the love of god!"  Mark jerked slightly from the shock he received, but felt it was worth it.  

Jack didn't go faster, but he changed his rhythm. Adding in a few slight twists in between his long deep pumps.  Leaving Mark no choice. Jack had literally pulled the loud moan from him. This time the bliss of the volts mixing with the throbbing pleasure from between his legs pulsed through him so hard that it curled his toes. He had to stop Jack now or he wouldn't last! Prying Jack's hand out of his underwear, he shifted back onto his knees. Consumed in a burning lust, Mark yanked Jack's black boxers up his pale legs. He didn't even bother trying to get his off. It would take too long. So he lowered the front of them enough to reveal his raging hard on. He couldn't even wait for Jack's feet to settle back down onto the mattress. He needed him now! Jack had brought him to the edge of his desire and now he was ready to get off. A look of horror crossed Jack's face when he realized what Mark was about to do. Unable to stop him, he only managed to cry out uneasily.  "Wait, Mark! Don't! I'm not-"  Mark couldn't hear him. He was too far gone in his lust.  All he could hear was his own thundering heartbeat in his ears. He had a lustful urge to quench and it refused to be denied.  

Lining himself up, he eased himself slowly into Jack's tight ass.  A piercing scream that could have scattered glass left Jack. Once Mark had breeched Jack entirely, he stopped long enough to let Jack adjust to his girth. The second Jack gave him a wincing nod, he started ramming into Jack with a ravenous and primal need. Jack felt his eyes water from the short burst of pain, but he powered himself through it just before the stimulator started up again. The pain and the pleasure mixed, giving him too many emotions that didn't allow him the ability to speak. All he could do was focus on his breathing. Mark brought his condition to a new height, when he suddenly lifted him off the mattress and into his arms. Jack had to wrap his arms around Mark's shoulders to steady himself. Burying his head into the nape of Mark's neck, he let Mark carry him off the bed to slam him against the nearest wall. The cold wall against his back made him shiver, adding to the tingling that he was already enduring by the end of the first stimulator. The second stimulator started up and Jack huddled against Mark. The weirdest tingles ran up the muscles of his groin, causing his eyes to roll back as he tilted his head back against the wall.  Mark powered through the shocks he received as he panted out heavily against Jack's shoulder.  "Jack, I'm close!"  

The moment Jack heard those words something in his lower half released the flood gates. Clawing his fingernails down Mark's back, his toes curled and he pressed his body firmly against Mark's as he cried out.  "OH SHITE! MARK!"  Mark shoved himself deep into Jack one last time, groaning out his own release.  When Mark was sure he was finished, he carefully let go of Jack's legs one at a time until his feet were firmly on the ground.  Although, Jack didn't have the strength to stay standing for long.  Instead, Jack weakly sank to his knees beside the bed, tugging off the pads to both muscle stimulators. When Jack was satisfied they were not on him anymore, he dropped his face into the comforter, muttering out in a dry muffled voice.  "You forgot to lube me first, Mark." Mark winced feeling slightly guilty, but leaned in to kiss Jack's shoulder, before playfully whispering rather smugly into his ear.  "I'm too pro for lube." Jack lifted his head to watch Mark cross into the bathroom with narrowed eyes.  His gaze drifting along, until he discovered the remote to Mark's shock collar. Laying his arm casually out across the bed, he picked it up with a cocky smirk. Slamming his thumb down on the black button, a soft chuckle escaped Jack as Mark's sharp surprised scream echoed off the bathroom walls. The End.