Fluff with indicated smut. I would personally rate this T, but due to the fact that I'm basically the opposite of sensitive with this stuff I will rate it M just in case.
"Jack! No, what are you- Jack! Stop! Please!" the auburn haired boy managed to choke out between loud laughter and huffed snorts. When his blue-eyed, incredibly charming boyfriend Jackson Overland Frost had promised his 'little viking' a present for his 18th birthday he wouldn't forget in a hurry, Hiccup Haddock had expected something that was typically Jack. Maybe something weird from that creepy store around the street corner, or even something more serious like a new sketch book for Hiccup's endless doodles of Odin-knows-what. He certainly hadn't expected a sudden tickle attack as they had cuddled innocently on the bed for, what, ten minutues? Twenty?
"I'm sorry Hiccup, but, you're just too tempting." Jack half whispered, half purred in the significantly scrawnier teen's ear as his trained fingers found their way up his boyfriend's hips, and he could feel Hiccup shudder lightly underneath him. Hiccup's father, Stoick, had left the two boys alone to run a few errands, thank the gods, and Jack had decided to take advantage of this. Kissing the boy underneath him fully on the lips, he sneakily moved the fingers of his left hand up towards Hiccup's shoulder, intending to get the now disturbing shirt out of the way. He abruptly ended the kiss, and instead decided to focus on the boy's now fully exposed neck, softly brushing his lips over the countless freckles located almost all over his viking's upper body. Jack knew exactly what tricks to use to make Hiccup fully submit to him, and he intended to create an entire new experience for his lover, not wanting to hold anything back. Using his tongue as his weapon, Jack made sure to leave light red marks here and there as he got closer and closer to the collarbone. He could faintly hear Hiccup purring uncontrollably as his lips moved from place to place, making Jack pleased with himself, both for succeeding to please his boyfriend, and for making himself more and more excited. Suddenly and out of nowhere, Hiccup decided to not let Jack have all of the fun, and sat up, before next to ripping his green shirt off, tossing it on the floor, and eventually returned his longing lips to their perfect match. A little surprised, but pleasantly so, Jack returned the kiss with a new touch to it. Burning, hot and raw passion. The much paler boy had already abandoned his shirt a while before the tickle session had begun, proudly showing off his new six pack. Hiccup had tried to ignore it, failing miserably at not getting aroused. Jack, being the sneaky bastard that he was, had noticed this, and had smirked internally. Running his hands all over his lover's abdomen, Hiccup sought entrance to Jack's mouth, and it was gladly given to him.
"So." Jack began between kisses, "when is your dad coming back?"
"Probably-in about-two hours." Hiccup could barely speak, he was so eager. This was new, but Jack liked it. In fact, he wondered why it hadn't happened sooner. He was usually the one in control, kinky and dominating in a sweet way, whilst Hiccup had always simply decided to roll with it, immediately embarrassed if he tried anything that Jack wasn't already doing. But this was different. This was new, exciting, and frankly more than a little bit arousing. Pulling Hiccup closer to himself, Jack dug his fingers into the somewhat shorter boy's back, making him move slightly. Hiccup was now straddling Jack, and could easily push him onto the rather small but cosy (and messy) bed. Not willing to wait for this to happen, he slowly lowered himself onto his back, head pressed against the pillow, and Hiccup, following Jack's movements, kept straddling him. Half sitting, half lying down, the 18 year old decided that it was his turn to be in the spotlight. Almost mimicing Jack's earlier movements, Hiccup sucked on different spots on and around his boyfriend's neck, making sure to leave a hickey or two.
"How come you've never tried this before?" Jack purred, moaning quietly.
"Well," Hiccup tried to hide the light flush forming on his cheeks, "I always assumed you liked being in charge." his mouth was now almost by Jack's chest, and his fingers were gently playing with the strong, newly created abs underneath him.
"Well, you're not wrong." Jack chuckled slightly, "but that does not mean I don't enjoy seeing hints of raw vikingness from your side every once in a while."
"Is that so...?" Hiccup whispered in a playful tone, and for Hiccup it almost sounded... dangerous. Jack could feel his lover's soft fingers reaching the hem of his pants, and couldn't stop himself before he released a long, low moan, shuddering in response. Smiling to himself, the green eyed boy let his tongue gently roll along the six pack placed so perfectly before his face, receiving numerous more purrs and moans, along with something that could only be described as puppy noises. Without even acknowledging it before the deed was already done, Jack caught his hand ruffling his boyfriend's hair, whilst the other one one was clutching onto the sheets. Hiccup merely continued his new game, pretending to fumble a little while unbuttoning the brown trousers just to tease Jack even further. Desperate for more of his gentle yet firm touch, Jack brought his other hand to Hiccup's hair, receiving nothing but a satisfied chuckle from him. Finally, Jack could feel his trousers being slowly removed from his legs, before being tossed onto the floor, along with almost all of their other clothes. Barely grazing his lover's length with his fingertips, Hiccup began to work his way up again, but making sure to not miss a single place of Jack's stomach with his lips and tongue.
"I hope you realize I'm gonna want you to do that again soon." Jack panted, reaching down for yet another kiss when Hiccup had barely reached his neck. He watched in awe as his boyfriend crawled up so their lips could easily be reunited once more. But instead of doing just that, Hiccup cupped Jack's face gently in his hands, green eyes meeting blue.
"Then earn it." he whispered before kissing Jack's nose, his hand working its way down below Jack's abdomen again.