A/N: Okay so I had to write a short story for math (yes math) and we were aloud to write fan fiction so this was born. Any way I hope you enjoy!
Ryuuzaki, otherwise known as L, the greatest detective in the world, stood standing in front of the refrigerator with the door wide open. He had been that way for several minutes, just staring, his large dark eyes unmoving. Finally, he shut the door, biting his right thumbnail and turned on the only other person in the room saying, "Light-kun, it would seem my cake has gone missing." He looked at the brunette, "You didn't take it, did you?"
The other detective looked up, surprised. "Did I what? L, I have no idea what you're talking about. Besides, in case you've forgotten, we're trying to track down a mass murderer, I don't think you should be worrying about your sugar high food," Light Yagami looked disgustedly at the other.
"But, I already know you are Kira," Ryuuzaki continued before Light could cut him off, "Therefore, I will continue to look for my cake," his voice remained calm but determined.
Light threw his arms in the air, sending papers flying. "For the LAST time," he screamed, "I am NOT KIRA. And I did NOT steal your cake!"
"That was denial. The chances of you being Kira have increased by 3 and I am now 67 positive you stole my cake."
Lights thoughts raced. This could just be another trick to get me to admit I'm Kira, in fact he's probably hidden the cake and will pull it out if I say I took it and then he'll some how twist that to make me Kira. So the only obvious solution here is to deny having taken the cake. But if I deny I took the cake it will probably mean I'm Kira…wait, Kira is a murderer. Why would he… "I did not eat your cake, L," he stated without batting an eye. L just shook his head, ran briskly over to the refrigerator, and dropped down on his knees. He began to investigate in a Sherlock Holmes style. "…L, what are you doing?"
Ryuuzaki looked up at Light stating in a matter-of-fact way, "What do you think, Light-kun? Clearly I'm checking to see if the thief left any clues. Would Light-kun care to assist me?" Light looked at the other before shaking his head no and turning back to his computer. Ryuuzaki looked over at Light then shrugged his shoulders saying, "Suit yourself," and returned to searching.
An hour later Ryuuzaki looked up at Light again and said, "I know who stole my cake, Light-kun."
Mello sat licking the chocolate frosting off his fork, smiling deviously.
"You know Mello," Matt, his partner in crime, started, not looking up from his game, "If you wanted cake you didn't have to steal it from L."
"But that was way more fun!" He grinned, licking the last little bite off his fork.
"Yeah, whatever," Matt smiled at the idiocy of his best friend.
Based on Death Note by Tsugumi Ohba and Takeshi Obata