Dean truly hadn't been kidding when he said he was afraid of snakes, is the first thing Seth thinks when he wakes up to find Dean sweaty and tense next to him in bed. His teeth are gritted so tight that Seth has no doubt in his mind that Dean will crack them if he keeps on like this. He's having an internal argument over whether or not to wake him up, all too aware that if he does, Dean will more than likely punch him in the face or kick him clean out of bed.
It's not until he starts moaning that Seth gives up, grabs him by the shoulder and lightly shakes him. "Come on, man, stop it. It's not happening to you right now, you're safe." Sure enough, Dean comes up swinging, yelling hoarsely about Damian and Seth sighs tiredly, barely escaping getting his lights punched out. "Dammit, Dean," he snaps, amazed that Roman hasn't been woke up yet by all of this.
Dean hisses and sits up, digging his knuckles into his eyes. "Oh God," he hisses. "I hate snakes. So damn much. Crawlin' all over me, their scaley little tongues flickin' at me-"
"I don't think their tongues are scaley," Seth points out, just to be met by Dean's cold gaze. "Ok, ok, sorry. Continue on."
But the interruption seems to have taken the winds out of Dean's sails. He sits there quietly for a few minutes before standing up. "I can't sleep like this, can't get the damn thing out of my head..." He's barely taken a step, however, before Seth grabs him and pushes him back into bed. "Hey! Dammit, Rollins, let go'a me right now!"
"It's three in the morning, we're all beat up and exhausted, and we have more of the same to go through tomorrow. So lay down, shut up, and sleep for God's sake."
Dean huffs through his nose, abiding by two of Seth's suggestions, although he's so tense that Seth figures he might as well be laying next to a wooden plank. Why couldn't it be Roman's turn? Or Dean could sleep alone? Seth sighs, knowing that that wouldn't be good either, because then Dean wouldn't have anyone to wake him up from nightmares or harrass him into staying in bed when the things haunting his nightmares get too loud.
Grimacing, Seth rolls over and drapes an arm over Dean's chest. "You listen, Ambrose, if anyone hears about this, I'm never waking you up from one of these nightmares again, got me?" He grips Dean tighter and pulls him closer. "Just get some sleep. You're fine, you're safe. No snakes are gonna get past me. I'll kick 'em in their scaley little mouths if they try."
Dean closes his eyes and finally, bit by painful bit, relaxes. "Snakes don't have scaley little mouths," he mocks.
"I hate you," Seth mumbles, pinching his side. "Now shut up and go to sleep."
This time, Dean listens. And this time the nightmares stay away.
