Challenge Word: Fall
A/N: This was edited to fix a typo that was really bugging me.
Dean watched the rise and fall of Sam's chest, his eyes heavy after his long vigil.
"Go to sleep, Dean."
"Can't, Sam. Gotta wake you every two hours. You know the drill."
Sam sighed wearily. "Dean, it's only a mild concussion. I'm fine. Really. But you need sleep."
"Yeah? How many fingers do you see, hotshot?"
"Three. How many do you see?" Sam displayed one finger.
"Touchy. Okay, you win. Happy?"
"Ecstatic."
"Just remember, if you lapse into a coma, I'm not dream-tripping your ass out."
"Sure, Dean." Sam's chuckle drifted in the air as both brothers surrendered to sleep.