tags: implied hs!au, sam pov, shipper!sam
Sam witnesses it all.
In all honesty, Dean really should have seen it coming, but when the stream of water hits him directly in the face, all he can do is stand there gaping at the culprit.
Castiel doesn’t look guilty at all, as he stands there with a cheap water pistol, a challenging smirk creeping up his cheeks.
“You’re a dead man, Novak.” Is all Dean says before lunging for the water balloon bucket and chucking balloon after balloon at his best friend and Castiel laughs with delight, trying to block them from hitting his face.