Mary hugged Sam back hard. She had assumed that the party would be a hit with her youngest son, but she had never expected to see such clear proof that he enjoyed it. A smile she had planned for, but not that wide smile, and certainly not the grin. Truth be told, she was enjoying this birthday as much as Sam was, because it was the first they'd had together since his original birthday. There was little resemblance between that squalling red newborn and this tall, strong young man, but Mary could still see the similarities that only a mother could.
"It wasn't just me." She whispered in Sam's ear. "We all did this for you because we love you...and because you deserve it." She gave him an extra squeeze before he stepped away. "Happy birthday, honey."
Sam stepped away to look things over again, and when he started laughing at Dean's hat, Mary had to smile to herself. Just you wait, son of mine. We'll have you in a birthday hat and doing silly birthday antics in ten minutes flat. Honestly, Mary wouldn't have even cared if the birthday cake she had worked so hard to bake turned out to be the casualty of some food fight between the boys. After all, she had set her heart on getting messy, cake faced baby pictures of Sam, and if they came over twenty years too late...well better late than never.