"A quick one, before Dean comes out."
"Will we have enough time?" Cas asked, hesitating on the steps leading out of the bunker and to the waiting Impala.
Sam bounced on his toes but stopped before Cas could call him out on his impetuousness. "The longer we wait, the more likely he'll interrupt us. So please?"
He had to admit, there was something charming about Sam in those brief moments he covered the eyes of his dignity. That he felt safe enough with Cas to give in to more childish desires, unlike when he was an actual child.
Alright. Okay. Cas stepped down level to Sam, wrapped his arms around his legs, just under his behind, and lifted him off the ground. Hands gripped his shoulders for balance, and while Cas's view was obscured by his lover's torso, he could feel the failed suppression of delight on Sam's face.
But all good things must end. With the threat of Dean's interruption looming close, Cas gently lowered him back onto the ground. Sam ascended the stairs full of what must have felt to him post-coital satisfaction, leaving Cas behind grunting "You're welcome" to himself.