Ever since Dean and Cas finally started sharing a bed in their own motel room, Sam can’t seem to get them out of bed in the morning. They take forever. Sam has found them day after day, snuggled up against each other, Dean asleep while Cas holds him.
“Shh,” Cas always says. “Let him sleep.”
Sam has watched how Dean stirs at Cas’ whisper, then buries himself even further in the angel’s neck, sighing and gripping Cas even tighter. Refusing to get up and start his day.
And if Sam let them, they would stay there until nightfall.
So Sam decides at some point that it keeps them on schedule- and amuses the hell out of him- if he simply bursts into their room and throws a motel ice bucket full of freezing water over them. Dean shouts, on his feet before Sam can even get a good laugh in. It almost earned Sam a black eye once, but not having to wait around for them is worth it.
Dean never learns his lesson, never gets up earlier. He just stays sprawled out on top of Cas, mouth open and snoring slightly, until the ice cold water wakes him up. Cas never seems to really mind, and Sam doesn’t much care either as long as Dean’s ready to go when he is.
And then one day, Sam bursts in with his wake up call, only to stumble on Cas and Dean definitely not asleep. Sam gets an eyeful of skin and the sound of one loud moan before he’s backing out of the room, eyes shut and brain trying to erase everything he just witnessed.
Sam’s waiting at the car, leaning against the hood and trying not to vomit, when they finally come out an hour later. He has a speech waiting, is ready to give them hell for their bad timing and his own bad planning, is ready to tell Dean that he needs to bleach his eyeballs now.
Instead, he watches as Cas shyly smiles up at Dean, as Dean hooks a finger in Cas’ belt loop and pulls him close, whispers something that makes them both laugh softly. He sees the ease in Dean’s shoulders, shoulders that no longer carry the weight of the world. And Sam stays quiet.
He never bursts into their room again. Instead, he just buys the loudest alarm clock he can find and hopes for the best.