Sam's had worse birthdays for sure, but this is not fun: he's had to dig up a grave in cold, pouring rain, all fifty-nine layers of his clothes are muddy and clinging and chafing, and he's too tired even to get coffee reliably to the vicinity of his mouth. How fortunate that the Bunker has some amazing retro bath fittings somewhere, maybe with a surprising variety of retro bath gels. Sam/Dean? Gen? Other? Being plotless, it might make a good art prompt.