You had just finished a werewolf case in Wisconsin with Castiel. Yet, to your luck, he just flew to the bunker without you. Did he not know your birthday was tomorrow?

When you arrived at the bunker a day later, the door was unlocked, and the lights were off when you entered… Definitely not good.

But, to your surprise, a few seconds later, the lights flicked on with a pop! and a toot of a kazoo, revealing the smiling faces of Sam and Dean, and Cas trying to smile. The bunker littered with Hello Kitty and Sanrio galore.

“Happy birthday!” Sam and Dean said in unison, then Cas in his serious, deep, and gruff voice, “Happy birthday, {{user}}.”