Author's Note: Part one to a series of human Cas stuff.

This had to stop.

Dean knew that it was not healthy for the ex-angel to be sitting on the couch sulking, watching Star Trek all ding dong day. It's not that Dean had a problem with Star Trek, (are you kidding?) it was just that although a marathon of it was acceptable, three straight days of nothing but it was starting to be, as Spock would say, illogical.

Making sure Cas did not hear his footsteps, Dean slowly crept up behind him. Dean could see the side of Cas' face now, bright blue eyes still glued to the television screen. He noticed that he was sitting in the exact same position he was in before Dean left the house hours ago, and his dark brown hair that made his eyes seem even bluer was still disheveled, as usual. He was still wearing the slightly too big AC/DC shirt that Dean lent him and the lower half of his body was practically drowning in the pair of sweatpants from Sam. Dean had given Cas the option to borrow a pair of his pants, but apparently Sam's were comfier or whatever.

Dean understood, or at least he tried to understand, what Castiel must be going through as he made his transition from angel to human. He expected there to have been conflicts, such as temper tantrums over lack of angelic abilities, mood swings caused by the human emotions that were thrust upon him, and the inevitable stage of not wanting to talk to anyone for days, maybe weeks. But Castiel had not gone through any of that, much to Dean's relief and suspicion. Sam had suggested that it was possible that Cas was just so mature that the change in scenery was easy to not be so easily affected by it. Dean wanted to believe this was true, he really did, but he knew Cas better than that. He knew Cas the better than anyone, actually. He knew the exact moment when Cas was going to ask a human lifestyle related question, he knew when Cas was lying to him, he knew what foods would seem most appealing to him, and he memorized his favorites. He knew all this and countless other little things about Cas and he knew, for sure, that it was only a matter of time until the other shoe dropped and Cas would loose his marbles.

"Dean?"

Cas' voice jerked Dean out of his thoughts as he met his perplexed face. How long had he been standing there?

"Uh yeah Cas?"

Cas hesitated, as if weighing his options. Dean knew this face all too well.

"Is it possible-"

"As soon as Sam gets back-" Dean interrupted. He already knew what he was going to say.

"That maybe we could-"

"With our takeout-"

"Consume some-"

"Then we'll eat."

"Food? Oh."

Dean smiled at Cas' confused glare. This wasn't the first time he knew exactly what Cas wanted and didn't bother to let him voice it out first. Cas' expression softened at Dean's smile and he returned it. Dean sat down next to Cas. It was time they talked about this constant moping around.

"So, what's up with all this final frontier nonsense?"

Cas furrowed his brow at this, then realization flooded his face.

"Oh, you're addressing my new fascination with Star Fleet and the Enterprise? I'm not sure why I've taken an interest to it."

"I thought you were more of the birds and bees type of guy." Oh, bad choice of words.

"I mean, uh, I thought you liked the great outdoors more, is what I mean." Wow, real smooth Dean.

"Well, although I do enjoy the outdoors, I, uh, I don't know." Cas turned his face away from Dean's to look at his hands, looking as though he felt guilty about having an affair with TV and realized he was cheating on nature or something.

Dean couldn't stand to see his friend so sad like this to the point where he was overwhelmed with empathy. This was not a feeling he felt often or had come to terms with, being a hunter of supernatural creatures and all, but desperate times called for desperate measures.

"Hey."

Castiel did not look up from his hands.

"I know you're still adjusting, I get that. But, I think I know a way to make you feel better."

When this was said, Cas met Dean's gaze, eyes shimmering in eagerness.

"What.. do you have in mind?" said Cas, his voice almost dripping with excitement.

"How about a picnic? As Sam comes home with the takeout that takes an eternity to pick up, we'll put food and blankets in the Impala and drive to a park or something and, you know. Eat outside."

The smile that spread on Cas' face as Dean talked was priceless, and Dean gave himself a mental pat on the back for thinking this plan up and provoking said smile.

As if on cue, Sam shuffled into the motel carrying two big brown bags of what smelled like Chinese food.

One stop for gas, three arguments about the perfect picnic spot and what food to bring, and 20 minutes later, Sam, Dean and Cas had found themselves a nice hill to sit on and a nice sunset to look at while they ate. Sam and Dean talked and argued about what kind of music they should start to get Cas into, when they will start to take him shopping for his own clothes (even though neither had a problem sharing) and they also praised Cas about how remarkably fast he had been adjusting. In response to this praise, Cas remembered a human quote he had stumbled upon the internet whilst using Sam's laptop, and he sensed that this was the perfect time to use said quote. In between bites of the noodles happily in his mouth, Cas managed to nonchalantly say,

"Well you know. When life gives you lemons-"

Cas could not believe he had forgotten the rest of the quote. This was another side effect on the long list of Side Effects To Being A Human; very limited memory capacity. His mind frantically searched for the ending of the quote, but to no avail. Sam and Dean were staring at him now, waiting for him to finish.

"Make... lemon pie."

The outbursts of laughter and tears from the Winchesters that followed was quite astounding to Cas. He only had seen them laugh on very rare occasions. Knowing that he had been the cause of this laughter should have filled him up with embarrassment but instead, he felt victorious pride. Feeling overwhelmed with happiness, Cas soon joined in on the laughter. Sam could not remember Cas being this funny, and Dean could not remember him being this adorable, but all three of them could not remember being this happy in a long, long time.