Glasses? Glasses.
A/N: I COULDN'T HELP MYSELF. I COULDN'T. I'M NOT SORRY.
~Line Break~
Dean really wasn't expecting Castiel to come dropping (literally) back into his life again. Doesn't mean it wasn't a pleasant surprise, but still. A little warning wouldn't have hurt.
"Cas, what the hell!" Dean said. He mentally cringed at not saying something better like, 'Hey' or 'How are yah?'. But he was pissed goddamnit. He removed his hands from the glasses perched on his nose and spun around to yell the stupid angel's ears off. Cas had better be ready to fucking apolo- Well, those were new.
"D-dean, I, ah, hello," Castiel began. His face was flushed and his eyes were wide, but all Dean could think of or register were the two massive wings behind him. They were gorgeous, a midnight black with a sprinkling of a blue that reminded Dean of galaxies. They spread many feet- perhaps sixteen- in length, and they looked soft as all hell. "I, uh, do not know as to what to say at this moment, and I, ah, do apologize for unexpectedly showing up here with you and Sam..." Castiel had continued, even if Dean wasn't really paying attention.
"Dude, are those your wings?" Cas stopped, and the wings drew themselves closer to his body almost in embarrassment. He looked confused for only a moment, before realization came to the angel.
"Yes," Castiel said with a nod. "I believe those glasses allow you to perceive them." Dean nodded and moved forward, a hand reaching out to touch a wing. When the wing flinched away, Dean stopped and laughed a little.
"May I touch them?" he asked, and Castiel felt his (already flushged) face become hotter. He could only nod as he felt Dean's rough hand graze the arch, before it completely came down and stroked.
This continued for a while, and the hunter slowly stroked his way down the wing. When he came closer to where they met Cas's back, Cas made small breathy noises, which in turn caused the human to smirk. When he felt that Cas was flustered enough (and the small groans were now higher in volume), he completely stopped and moved away. The wings really were soft, like smooth sand, but teasing Cas was too funny.
"So, you were here again, because...?" Castiel had to blink a few times, just to focus enough through the haze to answer his question.
"I was monitoring you and your brother when you came back with the glasses..." The angel hid his face a little. "...And I found myself, ah, here..." Dean nodded, still smirking as Cas was obviously aroused and embarrassed. He moved towards Cas again, and felt pride as the angel's very dialated eyes dialated even further.
"Are you trying to tell me that you literally fell into here when you saw me wearing glasses? And that wing touching is a total goddamn yes?"
"...Yes, I suppose so."
"Well, I vote that we fucking explore this to the fullest extent. I have my own room now, y'know."
Dean couldn't even finish his smirk before he was being slammed against the inside of his own bedroom door.