The challenge word is Blanket and Sam and Dean are having to share!
"Jeeze, Sam. Gimme at least a corner of the god-damn blanket will you. I'm freezing my ass off here!"
The elder Winchester grumped noisily, tugging at the shabby, stripy green comforter that draped the exhausted pair.
"Well, if you'd lay still for one second, Dean, we could both keep warm!"
Sam reluctantly lessened his death grip on the corner of the cloth allowing his sibling the lion's share.
Dean sighed happily and Sam smiled despite himself as the older man drew his legs up and curled into the relative nirvana of the musty blanket.
"Better?"
"Mmmm...Night, Sammy."
"Sleep well, Dean."
Anyone wanna snuggle them up?