Since he'd arrived, Dean had spent the majority of his time scouring the internet for anything. After some time, a few of the patrons of the bookstore and this small, pointless coffee shop adjunct, started giving him put-upon glances, but he kept ordering coffee he wasn't drinking, and despite jacking up their power bill for the month, he wasn't doing anything egregious.
Over the sounds of the keys and the hushed whispering pervading the whole place, Dean was certain he heard a horse. Considering how strange this place was, he honestly didn't think twice about it, though he was slightly aware that the sounds of hooves on pavement didn't get further away. Though he was absorbed in his work on the computer, it wasn't enough to distract him from the revelation that someone was apparently walking a horse into the bookstore. Somehow, the reality was harder to explain.
Looking up, Dean saw the horse, except it wasn't just a horse. He blinked a few times, eyes fixated on what he would have guessed was some kind of fever dream. After nearly a half a minute, with none of the other patrons even seeming to react to what he was seeing, and closing his eyes tightly, Dean brought a hand to his face, dragging his fingers across his eyes to pinch the bridge of his nose. When he opened his eyes again, the centaur was still there.
Dean's face was overcome with some strange mixture of impressed at how insane he felt, incredulous because honestly, a centaur and half to hysterical because no, really. A centaur. Nodding his head once or twice and narrowing his eyes, he turned away from the sight in front of him to start unplugging the devices from the wall and packing them up without even checking to see the charge level. He did, however, take his phone back out of his pocket to see if he could take a picture. If he could do that, he could potentially convince Meg he hadn't lost it.
"This is the last time I even order coffee," he mumbled to himself as he snapped the picture.