This imagine is sort of based on this 😂:

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"Sam, I don't think that's a good idea," You winced a bit as you watched the younger Winchester squirt out whipped cream from the can onto his brother's hand as he slept on the couch.

Sam snickered softly then went to the edge of the couch, standing behind where Dean had placed his head. "Sam please-"

He started to tickle Dean's nose with a pigeon feather that he had found on the ground outside the Bunker.

Dean grunted and groaned, moving his head. Sam continued to irritate Dean's nose till-

SPLAT!

He shot awake, looking around startled at what just happened. Dean noticed that his nose and mouth were oddly cold and slightly slimy.

As Sam continued to laugh, Dean yelled, "SON OF A BITCH! SAM!" He looked at his palm to find it covered in whipped cream. You looked at them with horror and fear. This could get very serious and violent.

The thing is that you three have been occupied with cases for the past week and now was the only time Dean had actually got the chance to have some well deserved shut-eye.

And now, Sam has ruined it.

Which means that the only thing that can happen is verbal and physical violence between the two brothers.

You tried to mind your own business but Dean was so loud when he was angry. "SAM I JUST NEEDED A GOOD FIVE HOURS AND YOU RUINED IT! YOU'RE THE WORST!" Dean shouted and chased Sam around. The younger brother ran out, yelling for you to help him but you ignored his cries.

Anyways, he brought it upon himself.

Well it goes like this... For the past two weeks, Sam has been after Dean to get him to stay annoyed and pissed. One of their brotherly 'Prank Wars' have started up again, thought with only Sam as the participating side.

What he did to Dean right now... it was the last straw. Dean isn't going to leave him alone now. Last week, Sam used up all the hot water leaving Dean to shiver through the whole night. You slept with him, cuddled together, to make him feel better. A few days ago, Sam had eaten all of Dean's pie, refusing to get anymore for him, getting cake instead. He even refused to get any beers. You had to do it in the end.

He even caused Dean's wrist to sprain on a hunt, by mistake. Dean kept yelling in pain, Sam apologised though he didn't seem the least bit sorry.

He was acting like a douchbag, though it was amusing for you. Sam didn't really mean it, he was just being an annoying ass brother temporarily. It wasn't fully about pranks but just anything to make the other pissed.

Dean gave up chasing Sam around after he locked himself in his bedroom. He stomped his foot on the ground and growled loudly. Dean hastened back to you and sat on the chair opposite. "Hi [y/n], how are you doing?" He asked, eyebrows raised and a grin on his lips.

"Oh no, I know that look," You mumbled then got up, taking your book with you, "Nope! There's no way that I'm going to do whatever you're thinking!"

"Come on please, I need you to help me so that I can get back on Sam!" He begged, hands together as he followed you. You bit your lip, Dean came up infront of you and pouted.

"Pweety pwease with a cherry on top?" He batted his lashes and smiled. You sighed then placed a hand on your hip. "Fine I'll help, but it depends on what your plan is," You told and he kissed your cheek.

Dean put his hands together and rubbed them, a mischevious smirk on his face.

*****

While Sam had gone to get some supplies for the Bunker, you and Dean started to put your plan into action. You put a camera in Sam's bedroom, on his shelf with books covering all but the lense. It pointed to his bed. You put another small camera in his bathroom, strapped to the top of the shower rod. They were both undetectable.

"Now we wait, till he comes home and sleeps," You said and Dean breathed out, feeling excited. "This better work Dean, otherwise I'm going to move out," You stated seriously, "I can't stand both of you... fighting like children."

"Don't worry, it'll work. This makes us even," He responded and smirked. Dean was way too excited and it made you anxious.

*****

You held onto his arm as you both walked into Sammy's room. He had a night light, a small one, not because of being frightened of the dark but for unexpected encounters, to find his way around the room.

You cleared your throat quietly then went closer to Dean. "Do this quick, I just want to get this over with," You commented and he nodded. "Just relax, he's a heavy sleeper," Dean said then smiled smugly, "I've slept with women in a room next to his and he didn't even know what was going on."

You rolled your eyes then went to one side of the bed. Sam was facing you, you gulped and hoped he was actually deep in sleep. You looked to Dean one last time before you measured the length of his flawless strands of hair. Dean gave you a thumbs up and you grumbled quietly.

You just wish you won't regret doing this.

You put a finger under Sam's ear lobe and slid the scissor between the gathered hair of his shoulder-length hair in your other hand. You pushed down on the scissors, a Snip! sound following, and you flinched slightly. Sam moved a bit and you and Dean made sure you didn't move.

The rest of the procedure carried on the same way. It was stressful, distressing and just plain crazy. Sam would DEFINITELY freak at the fact that you're cutting his hair but... You depend on Dean to defend you from trouble, which actually scares you deep inside.

*****

6:47 AM...

You couldn't get to sleep, though you wanted to so badly. Dean had fallen asleep even though he said that he won't. Ugh, over-estimating son of a bitch honestly.

You shifted and turned on your bed, you did it cautiously so that Dean wouldn't wake up. You both had planned to stay awake all night just in case Sam wakes up for something and notices his 'new and improved' looks, courtesy his brother and his friend.

You yawned, surprisingly making a sound along with it. Your eyes widened and darted to Dean, hoping that he didn't wake up. All he did was turn a bit.

You shut your eyes, but the thoughts of Sam yelling and cursing both of you couldn't leave your-

"WHAT THE HELL?! OH MY GOD WHAT HAPPENED?! AHHHH!" A voice yelled out, Dean shot awake clearly disoriented and frightened.

"Huh, what-"

"DEAN YOU SON OF A BITCH I AM GOING TO KILL YOU DEAD YOU HEAR ME?!" Sam screamed at the top of his lungs. You could hear loud and ferocious footsteps approach the room, the door swinging open minutes later.

"YOU'RE AN ASSHOLE! Why did you cut my hair?!" He questioned, though a part of him new that Dean would attack him back for prancing him. The older Winchester rubbed his eyes and grinned, "I don't need to tell you, you know the answer."

Deab chuckled, causing more confusion to topple over Sam's. "Pie, cake... short hair, long hair... what's the difference anyways Sammy?" He teased but it had no playful affect on the receiving party.

Sam scrunched his nose, running a hand through his hair then crying out, "JERK!" He stomped his foot on the ground and Dean smirked.

"Bitch," Dean responded and Sam stood there, motionless and staring as if he was looking through Dean.

"AHH I'M GOING TO MURDER YOU!" Sam growled and ran to Dean, jumping on top of him and attacking him. Dean cried for help from you but you decided not to interfere. Sam didn't seem to have an idea that you had some handiwork in his makeover.

"[y/n]!... P-Please... Help!" Dean exclaimed while he punched Sam in the cheek and pushed him off of his body. Sam grunted, breathing heavily with his hair all over the place.

"I'm getting my revenge, you just wait," He stated, fuming with anger. Sam looked at you for a moment but his whole focus was on Dean, "You'll regret this." He raised his finger to him then stormed out.

There was silence in the room, the ringing sound started to annoy you.

"Woah dude, you messed up real big," You commented and Dean glares at you, "I'd advise you to just cut and run, that's all." You grabbed your laptop and a book then headed for the library but-

"No, I need your help to-"

"NO WAY IN HELL I'M GOING TO HELP YOU! Not happening," You clarified, giving him an expression which made sure he didn't ask anything else.

You walked out of the room, leaving Dean lost and scared. "Shit just got real," He mumbled then shrugged his shoulders. He'll just have to deal with whatever Sam throws at him.