Here's a short drabbled based on the Law of Gravity!Miraculous AU that Roe and I came up with. Gideon is Ladybug, Mabel is Chat Noir, and Dipper is Alya. The ending's a little meh, but I had fun writing this. Some dialogue was taken from our conversation about the AU. Hope you like it, Roe!

~*~

"I'm so close to figuring out Chat Noir's identity, Mabel! I can feel it!"

Resisting the urge to roll her eyes, Mabel smirked. "Oh really?" she asked, propping her head up on her hand. "And what makes you think that, Dipper?"

Ever since the two heroes of Gravity Falls had made their first appearance, Dipper had been obsessed with discovering their identities, Chat Noir more so than Ladybug, which amused Mabel to no end. She fiddled with her ring as she watched Dipper stuck another tack into his conspiracy board filled with various photos of Ladybug and Chat Noir.

Ooh, that was a cute photo of Ladybug. Mabel would have to swipe that one away for her scrapbook when Dipper wasn't looking.

Turning around to face Mabel where she was laying on her bed, Dipper clicked his pen. "I've already given up on figuring out Ladybug's identity," he said, motioning to a picture of the white-haired superhero. "His appearance is just too generic."

Mabel nodded silently in agreement. She had been trying to figure out her crush's identity since she had fallen for him, but to no avail. Despite his adorableness, Ladybug simply just didn't have any features that made him stand out in a crowd.

"However, the clues are piling up against Chat Noir!" Dipper began pacing across the room. "Think about it, who do we know who's always disappearing during akuma attacks and giving half-baked excuses?"

Mabel shifted uncomfortably. She personally thought that her best excuse was the time she got herself out of class by telling the teacher that she had to go meet her glitter supplier, but surely Dipper wasn't referring to her... right?

"That's right, Mabel," Dipper stopped his pacing and crouched down in front of Mabel to lower himself to her eye level. "Clearly, Chat Noir is-"

Mabel stiffened.

"Gideon Gleeful!"

What.

Dipper shot back up and resumed his pacing, but at a quicker speed. "How could I have been so blind! That brat is always leaving in the middle of akuma attacks and showing back up right after Chat Noir leaves!"

"Um, Dipper?"

"And the other day he said he had a dentist's appointment, but when I went to the office to snoop through the files, there was no record of him turning in an excuse form!"

"Dipper?"

"It's so obvious! Even though I'm struggling to believe that wimpy little Gleeful would be able be that brave, the evidence doesn't lie, Mabel!"

Mabel raised her hand.

"And of course there was also the time- yes, Mabel?"

"Isn't Chat Noir a girl?" Mabel tilted her head innocently.

Dipper froze, his jaw dropping and eyes widening. Silence filled the room as Mabel watched Dipper slowly process this new information.

Clearing his throat, Dipper slumped over. "Oh. I forgot about that."

"Yes, you did," Mabel agreed, fighting to keep a smile off her face.

Walking back to his conspiracy board, Dipper banged his head against it three times before throwing his head back and letting out a dramatic groan. "I'm smart! How can I not figure this out?"

Mabel snickered. "Are you sure you're that smart?"

Dipper sighed dejectedly, face-planting onto his own bed. "I'm supposed to be," he mumbled into his pillow.

Mabel frowned. As much fun she had trolling Dipper over Chat Noir's identity, it sort of broke Mabel's heart to see her brother so upset over it.

Getting up, Mabel went over to where Dipper was attempting to drown himself in his pillow and patted him on the back as she sat down. "Don't worry, bro-bro," she comforted him. "I bet Chat Noir is closer than you think she is."

Dipper relaxed into her touch for a moment before he shot up suddenly, almost hitting Mabel in the nose as he leapt up out of bed to the conspiracy board. "Of course! You're absolutely right! Chat Noir has to be someone in our school!" He began disconnected some of the strings and tying them to new tacks. "That one time where the akuma locked everyone inside, there was no way for anyone to get inside, but Chat Noir showed up almost immediately after the doors were sealed! That must mean that she goes to our school, can you believe it? I can't believe-"

Mabel giggled quietly as Dipper went off on another rant, completely rearranging his board as he did so. This was probably going to go on for another two hours. Might as well sit back and enjoy the show.