Disclaimer: *Cry cry sniffle* I in no way own these characters, nor do I profit from writing this fan fiction. Credit for head cannon goes to the most awesome fandom.

Head cannon inspiration: Darcy is actually able to lift Mjolnir she's just not allowed to. The last time she did she broke a car lot. Not a car-an entire dealership. SHIELD had to cover (and cover up) the damages.

"Hey, big guy, so I always wondered what that strange alien writing on Mew Mew says." Darcy chirped at Thor's elbow as they stood upon the roof of a used car dealership. They'd come up there for what Darcy liked to call their Hammershock Time. They chose the dealership because it reminded them of the service station in Puente Antigua. Thor looked down at Mjolnir attached to his belt at her words.

"It says, whoever lifts this hammer, should he be worthy, shall possess the power of Thor."

"Sweet. So like, if someone else could lift it, would you have to fight till the death for your throne or something?"

"No, I am rightful heir to the throne, therefore no one else may rule, especially one who is not an Aesir. They would merely be able to wield Mjolnir, and call forth lightning." Darcy's eyes bugged, then took on a gleam of mischief reminiscent of Loki that gave Thor's heart a sad but affectionate twinge. Thor thought he could guess what was going through Darcy's mind, and decided in that moment to humor her so that he could witness her brand of mischief.

"Could I try? Please, please, please?" she confirmed his suspicions giddily. Thor couldn't help but chuckle at her excitement, and detached Mjolnir from his waist and sat it at her feet. Thor stepped back, crossed his arms and smiled, waiting to see her struggle with his weapon. He imagined she'd give it a valiant attempt, and when she was unable to lift it would crack a joke about how it was no wonder his arms were so drool worthy.

Yet, completely shocking Thor speechless, Darcy gave a girly squeal and lifted Mjolnir from the rooftop.

"Fuck yeah!" she exclaimed happily, and with a saucy hip wiggled thrust Mjolnir into the air above her head. This broke Thor out of his shock, and nearly gave him a heart attack.

"Darcy!" he cried, hoping to stop her somehow before she called forth lightning, but knowing he'd be too late. Dark clouds formed in the sky, thunder boomed, and with a crack lightning shot down to Mjolnir. With a screech of terror Darcy flung her arm out away from herself, and leveled the dealership below them. Cars flipped and exploded into fireballs that Darcy and Thor would later marvel at. The ground shook, concrete splitting and rising, and with a drop to her stomach Darcy felt them start to fall as the building came crumbling down. Thor grabbed Darcy by the waist, took Mjolnir from her hand, and just in time managed to get them airborne. They landed across the street from the now desolated dealership. Darcy stared at the destruction she'd caused, mouth agape. Thor, concerned for her, rushed to assure her that it was all right and not her fault, but she struck him speechless once again.

"That. Was. Awesome!" she turned and grinned up at Thor, a maniacal gleam in her eyes. Thor mirrored her grin, and decided then and there that Darcy would be his honorary little sister. He couldn't help but to think that she and Loki would have liked each other well, and wished she could have met him. Then he thought about the havoc they would wreak together and shuddered. Perhaps it was a good thing they'd never met.

"Now I understand why you were freaking out when you crash landed here without Mew Mew." Thor looked mildly offended at that.

"It is Mjolnir, and I did not 'freak out'." Thor defended.

"That's what I said Mew Mew. And you totally freaked out. You were all 'Hammer Hammer'." She mocked in a surprisingly good imitation of him. They bickered like siblings about the pronunciation of Mjolnir and his freak out until SHIELD agents arrived on scene about ten minutes after she'd leveled the place. Fury and Natasha were amongst the cleanup team, and headed straight for Thor and Darcy. Thor though about taking the blame for the destruction, but still smarting over Darcy's slight against him and his hammer he decided not to.

"Care to explain what the hell happened here?" Fury demanded more than asked. Darcy would never admit it, but he intimidated the ever-loving shit out of her so she tried to play it cool and keep her mouth shut. In true cliché form, she put her hands behind her back, lifted her head and started to whistle a cherry tune. Natasha and Fury leveled their glares on her instantly.

"How exactly is this your fault?" Natasha asked.

"What makes you think it's my fault? It's his hammer."

"Did she insult your manhood, or question your power?" Natasha turned to Thor.

"Nay, she did this herself." He responded simply.

"How exactly did she manage that?" Fury demanded.

"She wanted to attempt to lift Mjolnir, so I placed it at her feet, and she lifted her quite easily. She did not fully comprehend the power she wielded. "

A moment of shocked silence passed. Both Natasha and Fury looked equally disbelieving and surprised. There was so much surprise that Darcy got a little offended.

"What? You think I'm not worthy enough? Guess what bitches, I totally am."

In the end Fury decided not to believe her, despite the video footage that supported her claims, and Natasha instructed Thor never to allow Darcy near Mjolnir again. Thor needed no persuading, and despite Darcy's numerous attempts, has not given into her mischievous whims again.

Much later, when the Avengers were enjoying some down time in the Avengers Tower, Tony decided to start a game of who can lift Mjolnir. Steve managed to budge it, and for a split second Thor's smug smirk slipped into a concerned frown. He feared another incident like the one Darcy had caused, but when Steve couldn't lift it Thor and Natasha shared a knowing smile. Both thinking about Darcy's handling of Mjolnir, and how none of the Avengers would believe she unlike them could lift it. Then thinking about how Darcy would react to the game he said urgently to Natasha.

"Darcy can never hear of this." With a laugh, Natasha agreed.