A loud clap of thunder erupted outside causing Milly to jump in surprise. She glanced over at Sam who was sitting on his bed, reading a book, seemingly unbothered by the noise. The storm had been raging outside for fifteen minutes and it was only growing louder. With every boom of thunder, Sam noticed Milly's unease seemed to grow.

"You alright Mils?" he called over, and she looked up from where she sat at the table.

"Is that Zeus out there? Is he gonna find us?" She asked with wide eyes filled with worry and Sam tried hard not to smile in amusement.

"C'mere."

Sam patted the spot on the bed beside him and she got up to walk over. She climbed up next to him wearing her penguin pajamas and he pulled her to sit on his lap, a protective arm wrapped around her. Dean was out for the night so it was just the two of them.

"Thunderstorms don't mean Zeus is nearby." He began, hoping it was the truth because he really had no way of knowing for sure, but Milly didn't need to know that.

"All lightning is, is a burst of electricity. And that electricity heats the air around it super fast causing it to explode."

"And that's the loud sound?"

"Yep. That's all it is."

"Oh. I guess that's not so bad. What were you reading?" She wondered, noticing Sam's book beside him on the bed.

"This is one of my favorite books of all time," he replied, showing her the cover of the book he'd been reading.

"Fellowship of the Ring." She read aloud.

"Want me to read some to you?"

"Yes please," she replied softly and leaned back so her head was resting just below his.

Sam flipped back to the first page and began reading.

"When Mr. Bilbo Baggins of Bag End announced that he would shortly be celebrating his eleventy-first birthday with a party of special magnificence, there was much talk and excitement in Hobbiton."

Milly listened attentively as Sam read, becoming so completely immersed in the story she forgot all about the storm outside.

"So how was your night last night?' Sam asked, zipping up his duffel bag the following morning as they packed up the motel room.

"Good, drank some beer, played some pool…" Dean replied casually as he put his jacket on and Sam smirked knowingly.

"That's all?"

Dean glanced out the window at Milly who was standing by the Impala.

"You're damn right, that's all." He muttered and Sam didn't even try to hide his amusement at the fact that his brother was now scarred for life.

"Are you ready or what?"

"Yeah, yeah I'm ready," Sam replied, slinging the bag over his shoulder and following Dean out the door.

Outside, Milly stood by the car tilting her head back to watch the clouds float by. The sky had gone back to its usual bright blue color rather than the angry gray it was the night before. It was soothing to her to just watch them glide along so smoothly. They were soft and light and she liked that about them. So many things in life seemed to be rough and heavy.

"What makes clouds move like that?" She wondered out loud, noticing Sam and Dean's footsteps approaching the car.

"I don't know, wind maybe?" Sam answered, tossing his bag in the open trunk.

"That makes sense." She replied, still looking up.

"Let's hit the road," Dean told them, getting in the front seat as Sam shut the trunk.

Since the run-in with Gabriel a few days prior, Milly, for the most part, had bounced back to her usual spirited, curious self. She never told them what she saw, and they accepted it, figuring if she wanted to, she would.

Milly tried her best not to think about it. Dean had assured her it wasn't real and she was willing to believe him, but hearing those words come out of his mouth still struck her. Just because it wasn't really them saying it, didn't mean it wasn't true.

"What does sonofabitch mean? It's not in the dictionary." Milly asked after they'd been on the road for nearly an hour.

They both froze in surprise having no idea where that had come from. Sam turned to glare at Dean who stifled a laugh, covering his mouth with his hand.

"It's not funny Dean." Sam scolded quietly, before turning around in his seat.

"Milly, please don't say that again. It's not a nice phrase."

She lowered her eyebrows in confusion, tilting her head slightly.

"But Dean says it all the time."

"I-I do, but I'm a grownup and I'm allowed to. Kids have to wait to say certain things." He explained, trying to come up with something believable on the spot.

"Oh."

"Right, so until we tell you it's okay, that word is a bad word, alright?" Sam continued.

"Okay. Wait, which word is bad?"

"The B one."

"Oh… okay. Are there other bad words?"

"Uh, yeah, there's a bunch."

"Wow, like what?"

Sam hesitated, not entirely sure how to proceed.

"How about if we ever hear one, we'll tell you."

"Okay." she nodded, looking out her window.

The brothers' shoulders relaxed when they thought it was over until Milly started thinking.

"What makes those words bad?"

Dean bit back a smirk, knowing the kid would just keep asking questions the more Sam tried to beat around the bush.

"Their meanings."

"The meanings of the words are bad?"

"Yep."

"If they're bad, then why do people say them?"

Dean glanced over at Sam, whose everlasting patience with Milly was beginning to wear thin.

"I think what Sam means is those words aren't bad, they're just not meant for kids. That's why you can't say them. And we can't explain to you why right now, so you're just gonna have to accept it alright?" Dean asked, keeping his tone as gentle as he could, not wanting to sound irritated. Because in all honesty, he was enjoying this very much.

"Okay…" Milly responded, not liking his response. Just one more thing she couldn't understand. Sometimes it felt like the more she learned, the less she understood.

"Is there anything kids can say that adults can't?"

"If there was, we wouldn't be able to tell you because we can't say them." Dean quipped, causing Sam to chuckle.

"No, but there's plenty of things that kids can do which adults can't."

"Like what?"

"Um… well Dean and I can't play at the park like you can. We'd be arrested."

Milly's eyes furrowed in disbelief.

"Wow, that's harsh."

To Sam and Dean's relief, she'd dropped the subject and focused her attention on a park pamphlet she found from a past case.

Not too much later, they stopped for gas and to stretch their legs a bit. Sam walked out of the gas station and over to Dean, after showing Milly where the restroom was. The elder Winchester had gotten them lunch and was leaning against the hood of the Impala.

"Why did Milly tell me she can't listen to Maroon 5?"

Dean laughed, keeping his eyes on the burger he held in his hands.

"It's not funny Dean, she thinks you're serious. She covered her ears when we walked inside."

"I am serious, Sam. As a parent, it's my job to keep my kid on the right path. Apparently, I'm doing a good job."

Sam rolled his eyes in annoyance while his brother just smirked in amusement. They watched the gas station window for Milly to emerge and just as she was about to, she stopped and began talking to the elderly cashier by the door.

"This kid…" Dean sighed, putting his burger down to go get her, just as Sam's phone received a text message. He pulled it out of his pocket and checked to find a text from Chuck.

SOS Pineview hotel, Ohio. LIFE OR DEATH

"Son of a bitch."