A/N: This is my first Supernatural fic. I started watching the series a while ago, and I couldn't help wanting more. This idea from random plot bunnies just begged to be written down, though I preferred a Dean/Castiel as an introduction to the fandom. Oh, well.

Summary: Dean losing to Sam? Yeah. It's possible. How? Sammy just has to be sly enough to do it. brotherlySam/Dean.

Disclaimer: I don't own Supernatural (or Dean, or Sam, or Castiel for that matter).

The grueling battle seemed to have lasted for days. Neither stood down for the other as both men held their ground, bearing sharp canines and sending off dangerous vibes of hostility. It was brother against brother; blood against blood, yet the conflict raged on.

A lone drop of sweat trickled down Dean's temple. Sam proved himself an opponent worthy of his brother's mettle. Cricking his neck, Dean wanted to settle this once and for all. It was his.

Wait for me, baby. Daddy's gonna have you any minute now.

Sam appeared the same. The younger Winchester wasn't going to give up without a fight. He totally opposed Dean's claim on it.

Oh, it is so on. Bring it.

Their glares clashed. This was the final frontier to determine the destiny of the last Snickers bar.

Dean plunged in with his finishing move: older brother authority. Dammit, Sammy. That chocolate is mine, because I'm older and I said so!" He knew it was a low blow; not to mention childish, but that usually ended every petty argument they had with him coming out on top.

"Man, can't you get any more selfish? You also ate all the Twinkies last time!"

"Tch. No way, dude. Brothers Winchester Rule #1: Big bros come first."

Dean smirked. There was no way Sam could counter that.

So, that's how it's gonna be, huh?

Sam still had one last trick up his sleeve. No one in the entire universe was immune to his secret weapon, but he had no other choice. It was his last resort.

"Pleeeeaaassseee?" he made a begging sound. Look into my eyes, Dean…

Dean fell right into the trap, and stared at those dreaded weapons of mass destruction.

"Friggin--- not the puppy dog eyes!"

"Please?"

Look away! Look away!

"Pretty please?"

Must. Re…sist.

Dean Winchester was a hard nut to crack, but he no match for those big ol' puppy dawg eyes. Sam exploited his brother's moment of weakness, and finished it off with a pout.

"Puh-leeeaaassseee?"

Screw it.

Defeated, Dean tossed the nutty chocolate bar at Sam.

"There. Happy?!"

Sam grinned, unwrapping his prize. He took a bite, and savored the glorious moment. This was one of those times where he gets what he wants. Dean just didn't know he had it in him to be this sly.

Smart younger brother, one. Dumb older brother, zero.

"You win this round, my friend," Dean said through gritted teeth. "Now excuse me while I go buy my own candy bar." He stormed out their motel room, leaving Sam to enjoy the chewy goodness of the chocolate.

Victory had never tasted this good.

A/N: Hahaha! Those two are just adorable. LOLz. Love it? Hate it? Review and tell me. :D