Happy Birthday Sam Winchester

Written for mimblexwimble on LJ for the Oh Sam! Birthday comment meme. The prompt was Bunker!fic - Sam's forgotten it's his birthday, but everyone else remembers. Sam keeps finding little gifts around the bunker, and Dean, Cas, Kevin, Charlie (anyone else you can think of) are handing out kisses and/or hugs to him like there's no tomorrow. GIVE ME SCHMOOP.