Sam couldn't help but chuckle softly at Dean's tirade. He did raise his eyebrows when Dean got to the part about how the City never did anything to be nice. He was even spared having to point out that the City had been very kind to Dean in some ways since it seemed that the elder Winchester might have come to that conclusion on his own.
"I never said it was a 'happy box,'" he said in his own defense. "I just think that if the City wants us to have it, it's going to keep throwing it in our faces."
Sam shot a furtive glance at Dean and tried to subtly take a few steps away. If the box was anything really bad, that little bit of distance probably wouldn't cushion his brother from anything. But short of asking Dean to leave, it was the best Sam could do.
He took a deep breath and opened the box. There was a key inside. Sam picked the key up and turned it over, a little surprise that nothing had happened.
"Well. That was anti-climactic." He looked over at Dean. "What do you think it's supposed to open?"