Here is a Loki X Peter fic requested by @lokiisiconic Thank you so much for the fun idea, I hope you like it!
Warnings: SFW Tickle fic
Words: 2403 Ler Loki X Lee Peter
The case of the missing helmet
To say Peter was nervous was an understatement. The better term would be Freaking the F out.
Peter was supposed to have thought of a special item to bring to class and present it as a show and tell presentation for his Public Speaking class, but he had been lazy all week and hadn’t asked anyone in the compound if he could borrow their stuff. His classmates knew Peter worked with Stark industries as an intern, so all week they were pestering him on what cool Avengers-themed item he was gonna show off.
Now Peter was kinda in a conundrum. He knew he had to find something that would blow the minds of his peers, be school safe, and ensure he wouldn’t be murdered for taking it.
His first option was of course Bucky’s arm. How cool would that be! The only issue is there would be no way in hell Bucky would let him borrow that. I mean, he kinda needed it. Thor’s hammer was another great idea except for the fact that he couldn’t lift it and he couldn’t bring Thor into his school. Peter really wanted to borrow something from Tony’s lab, but Tony already vetoed that idea and even if Peter tried to steal something without Tony knowing, he knew Friday would rat him out. ( She was such a traitor sometimes).
Peter was pacing around the compound looking into every nook and cranny to see if anything sparked an interest. He looked in closets, storage rooms, the basement, and even in the training room. But nothing piqued his interest. Peter was about to give up and accept his failed grade when he walked by an open bedroom. He subconsciously glanced inside while he was walking by and something shiny caught his eye. It was a beautifully crafted golden warrior's helmet with a unique set of horns that popped out of the front. He was standing in front of Loki’s room.
Peter shivered at the thought of Loki finding out Peter messed with his stuff. He knew Loki would probably hurt him, but desperate times called for desperate measures.
Peter quickly checked out his surroundings. Not a soul was in sight. As long as Peter returned his helmet before Loki noticed it missing, how would he know he took it in the first place? He just needed it for the afternoon, and he would return it as soon as school was out. Besides, Loki spent most of his day in the library on the far side of the compound, so he would never even know.
Peter quickly stepped into Loki’s room, grabbed the helmet, and made a mad dash out of there before anyone saw anything.
Unfortunately for Peter, someone was watching his every move. And this certain someone just happened to be the owner of this helmet. Loki was peering around the corner as the high school boy waltzed into his room and took his prized possession. Loki thought about confronting him right then and there but decided it would be a much better idea to wait until he returned it so he could determine what this boy's fate would be.
Now Loki did like the boy. Peter was like a goofy immature little brother to Loki. He didn’t want to harm the boy in any way but knew he needed to be taught a lesson for taking things without asking. If Peter had asked, he would have said yes in a heartbeat. He loved the idea of his stuff being shown off to a group of young midgardians.
Loki then remembered a recent memory of Peter getting in trouble with Tony after he had borrowed his tools and not given them back. Tony ruthlessly tickled the boy until he begged for him to stop. This was the perfect way to punish him! Now he just needed to wait for the boy to return from school.
A few hours later….
Peter’s project was a huge success! His classmates thought the helmet was sooooo cool and couldn’t believe that Peter had met the mysterious God of Mischief! He even was lucky enough to get special attention from MJ. Now all he had to do was sneak back into Loki’s room and put the helmet back without being caught by anyone. He could do it, his spidey senses made him an excellent spy and allowed him to sneak around without making a peep. If anything, this would be good practice for his next mission.
When Peter reached the compound, he decided the best way to sneak in would be to carefully remove one of the second-story window screens and sneak in that way. He had purposely left one unlocked so he could crawl in without risking walking through the common room or kitchen area and running into someone. The lights in the hallway were dimmed, which made it extra easy to creep his way towards Loki’s bedroom.
Little did poor Peter know, Loki was waiting for him in the shadows of the hallway. Loki’s room was on the corner of the hallway that curved into an L shape. At the end of the L was a bathroom, but you couldn’t see it from Loki’s door, so poor Peter would have no clue that’s where he was lurking. Loki listened as he heard his door creak open. He then quietly tiptoed to his bedroom door and waited for the young boy to turn around.
Peter carefully placed the helmet back onto its stand next to Loki’s closet door. Peter was amazed at how clean his room was. He had a nicely organized bookshelf that was packed with books on magic and a nice chair for reading in the corner. After observing the God’s room, Peter carefully made his way towards escape.
Peter slowly pulled the door shut, only a slight creak was made. Peter chuckled a little to himself. He had successfully gone undetected. Peter was about to make his way to the kitchen to get some food when all of a sudden a voice behind his head whispered “ Boo” and instant shivers coursed down Peter’s spine. Peter let out a very unmanly shriek as he turned to be face to face with Loki.
Loki had his arms crossed and was giving Peter a crooked smile, eyes bright with wonder. “ Oh hiya, Mr. Loki. I was uh just admiring your bookshelf err… it’s very nice.” Peter gulped and tried to play it cool. Loki saw right through this. “ You can cut the act kid, I know exactly what you were doing in my room. You might think you are clever, but rather you are very oblivious of your surroundings. Such a shame I must punish you for touching my stuff. I rather like you”. Loki took a step forward and Peter stepped back until his back planted against the door behind him. “ I’m sorry I didn’t ask sir, I just just thought you were gonna say no, so I I just borrowed it ya see?” Peter tried to reason with Loki but Loki’s grin just got bigger. “ Ah yes. It does seem it is returned. But you still took it without asking. There’s only one punishment suited for little robbers.” Peter’s thoughts raced at 100 miles per hour. What was gonna happen? He knew he shouldn’t have messed with a God!! “ What are you gonna do to me? Please don’t turn me into a frog or make me mute for a day! I really am sorry sir!!”
Loki chuckled at Peter’s attempt to escape the situation. “ By the time I’m done with you, you are gonna beg me to turn you into a frog”. And with that, Loki’s door flew open causing a startled Peter to stumble backward as the sudden act caused him to lose his footing. Peter landed on his back as Loki casually walked into the room. Peter rolled onto his stomach and attempted to jump up but Loki merely pushed him back down with his foot. “ Easy boy, you aren’t going anywhere until you’ve learned your lesson”. Loki then quickly rolled Peter back over and straddled him. Peter was in shear panicked mode. Loki was a good friend, but the look he was given made him absolutely terrified of his fate.
“ A couple of days ago I watched as Tony very efficiently made you yield after you borrowed some of his things. Do you remember that occasion?” As Loki spoke he ever so gently placed his hands on Peter’s sides acting very nonchalant. Peter flinched at the touch and his eyes went wide. “ ooh that bad huh? Well next time don’t touch my things without permission”.
Loki started slowly kneading the kid's sides to see what kind of reaction he could get. He wanted to start the kid off slow just so he could get him to drop his guard and then go for the kill. Peter shifted his body side to side as far as he could in his pinned position. He was trying to hold back his giggles as to not show how ticklish he was.
Loki poked his left side which caused a little Eep to escape Spider-Man’s lips, and as he shifted his body to the right to avoid the man's touch, his right side was met with the same poke and Eep. It was a cruel game for Peter and his giggles were soon getting louder.
“ Hey Sir, imaha sorry! I won't do it again! Please let me go, I'm insanely ticklish and I can’t handle it!” Peter was desperate. He hoped that maybe just this one time Loki would have mercy on him. Loki stopped for a moment and looked at the kid with a puzzled look. “ The more ticklish you are, the more fun I get to have. Tough cookies boy. You did this to yourself”. Loki grinned and started his assault again. This time he jammed his fingers under the unsuspecting boy's armpits and wriggled his fingers around as Peter let out a loud shriek and clamped his arms down to his sides. Peter was full-blown laughing now, Loki went from a not too horrible spot to his absolute worst spot in just a matter of seconds. Peter tried to roll away but he was stuck under the God of mischief and ultimately screwed.
Loki removed one hand from his armpits and used it to tease his rib cage a little. Peter was bursting with laughter now and with the new feeling in his ribs too, he was caught between loud shrieking and high-pitched giggles. How adorable. After a few minutes of this, Peter was weakened and stopped trying to fight back. Loki slowed his pace to allow the kid to breathe but didn’t stop altogether. He enjoyed the cute giggles Peter spit out when Loki just casually ran his fingers all over the boy's torso with an extremely light touch.
Peter in a happy tone said, “ I’m sorahahy Sir. I have learned my lesson *Hiccup* I promise it will never happen again! * Hiccup*”. Loki smiled at the teenager laying under him. His face was red and his hair was damp from all the sweat. But the smile plastered on his face was so big it caused his eyes to squint ever so slightly. Loki knew the poor kid was forgiven, but he still had one final thing he needed to do.
“ Ah yes, I think your lesson is almost completed. There is just one more thing I must do to ensure your loyalty and honestly in the future.” Loki winked at Peter and started to carefully roll up his T-Shirt.
Peter’s insides erupted with butterflies. He was doomed, but he was too tired to fight back. Peter tried to cover his belly with his hands but Loki just rolled his eyes and pinned his hands under his knees.
“ No no no no Please!! Anything but that please!!” Peter gave Loki his best puppy eye look hoping this would cause his freedom. Loki booped Peter on the nose. “ How can I not give you raspberries now when you look so pitiful and defeated. You need to lighten up a little!”
Loki then placed his lips on the poor kid's belly and blew. Peter exploded instantly. He thought his armpits were his worst spot, but now he knew that this was actually worse. “ NOHAHAH LOKI NOHAHA PLEHEHAHHHH” Peter couldn’t even form words properly as Loki planted more vibrating raspberries all over his torso. Loki blew one on his ribs, neck, belly, and even hip bones. Peter was thrashing around crazily trying to escape the torture, but Loki held firm and was relentless.
After about 15 raspberries were blown on the kid's skin, Loki stopped for good. Peter was now coughing and his laughter was hoarse. Loki wanted to punish the kid, not kill him.
“ Listen here boy, next time you touch my things without asking, I will not be as kind to you. I might even move to see how sensitive your feet are.” Peter shook his head rapidly. His feet were bad too. “ I swear it won’t happen again!” Loki offered Peter his hand and helped him stand up. “ Next time, just ask. I love it when Midgardians admire my things. You are like my little brother, I trust you.” Loki patted Peter’s back as Peter beamed up at Loki. No one had said that to Peter before. “ Well if I’m your little brother then that means it’s only fair if I try and get revenge huh?” Peter then poked Loki in the side to prove his point. Loki snatched Peter’s hand and tossed him onto the bed. “ You even think about revenge and you will regret it,” Loki smirked at Peter and tried to remove one of his shoes. “ NO NO I'M SORRY! I was just messing with you!” Peter could not handle any more tickles for today or he would most definitely go crazy.
Loki dropped his foot. “ I would be wise of your words, I don’t like being challenged. Now you have 3 seconds to exit my room or else”. And with those words, Peter bolted from the Gods room and disappeared down the hallway.
Loki chuckled to himself at the boy's antics. He really did enjoy being a big brother.









