A/N: I do not own Death Note or any of its characters.

X3CrimsonStarlightXD: Thank you! I love to get compliments about the things I write! Will I write a drabble about BB? Well I haven't read DN: Another Note yet, so I'm not exactly sure how BB's personality is, though I would guess he's a little weird and off the rocker, right? I'll have to read up on him first, but I'll see what I can do! :D

"How can you eat only junk food all day and not gain any weight?" You stared wide eyed at L as he finished his fourth piece of cake that day, and it was only noon. As usual, he was reviewing surveillance feed as he sat in his… preferred style.

"If you use your brain as much as I do, you wouldn't need to worry about such things," He didn't take his eyes away from the screen. You blinked. What was that supposed to mean? "Ryuuzaki," You waited until he looked up at you, "did you just imply that I'm stupid?" He blinked owlishly at you, "Of course not, [y/n], only that you do not use your brain as much as I use mine," he waited for your reply. You just stared at him, confused. "What does that have to do with not gaining weight from eating junk food, Ryuuzaki?"

He made an uncharacteristic sigh before answered, "You burn calories when you think. Furthermore, the brain mainly burns glucose to function. What is glucose, [y/n]?" You nearly face palmed as everything clicked into place. "Sugar," you couldn't suppress your laugh.

L cocked his head to the side, "What are you laughing at, [y/n]?" You tried to slow your breathing and calm down. "I just can't believe I didn't realize this before," You let out another laugh.

"Yes, well," He turned back to the monitor and said nothing else. Thinking it over, and because you hadn't had anything sweet to eat in quite a while, you reached for one of the many treats that sat next to L on a cart. Right before you would have reached one, L turned in his chair. Your hand froze where it was.

"What are you doing, [y/n]?" His eyes had an unidentifiable sparkle in them. "I'm going to feed my brain, Ryuuzaki," The corner of his mouth twitched.

"You will get fat if you don't think, [y/n]," You gasped at what he just said. He totally just insulted you. You could tell by the way his eyes glowed with amusement. Without thinking, you picked up the piece of cake you were reaching for and smashed it on the top of his head. Some of it fell down onto his face and covered his nose and mouth. He didn't even look surprised.

"I wasn't expecting that. What was that for, [y/n]?" You didn't even know how to answer that. It was completely on impulse. "I-I'm so sorry! I didn't mean to do that, Ryu-" he cut you off with a quick chaste kiss that smeared the sugary treat all over your mouth. Automatically, your tongue flicked out to clean it off your lips.

"You better start thinking, [y/n]," and he turned back to his monitor, leaving you standing there completely shocked.