Cas wasn't used to waking up like this (wasn't used to waking up at all), with his nose buried in somebody's hair and his lips resting at the base of their neck. He almost panicked, but the smell of the person was so familiar that he felt panicking would be an inappropriate reaction. Dean, it was Dean's scent. And then the weight on the bed shifted and Sam's scent was suddenly present as well. The previous night came rushing back and Cas found himself flushing a deep red.

"Aww, isn't that cute?" Dean's voice came teasingly through the haze of sleep and embarrassment.

"I think he's embarrassed," Sam's voice joined in, the smile practically audible.

Castiel let his embarrassment ease at their gentle teasing, and a small smile appeared on his lips. "I'm not used to waking up."

"That's right," Dean mused aloud, "angels don't sleep."

"That's funny," Sam said, "'cause you were snoring pretty hard there."

"We don't have to sleep, so we usually don't; it makes things more efficient. But our vessels can sleep so, subsequently, when we are in them, we can as well. Of course, even then we don't usually do so." He paused for a moment considering, "I like the way it feels to wake up."

After that statement, Sam snuggled up closer behind him, and Dean pressed back into him. "Hey Sam, that sounded like an invitation to me," Dean's voice was gruff and dark in a way that made Castiel's flesh shiver.

Sam's chest trembled behind him, and Cas realized it was silent laughter. "Yeah, I think he wants us to come up with new ways to wear him out."

Cas' last coherent thought was that he was going to be waking up a lot more.