[ Sam's huffing out a breath that plumes into vapor in the cold air at that insistence. Dean wouldn't know that they've had this conversation before, or at least one very much like it, and it... pretty much went exactly like this. Except it came a little later when Dean knew Jack better, and even if he didn't have the same kind of connection, he understood it better. They'll get there. It's not hard to see all the reasons that Sam was prone to taking Jack in, and to feeling so protective of him from the very start.

The truth is that Sam knows he couldn't do it. He's not even sure he could let it happen, no matter how bad it gets. Would he fight Jack if he has to? Absolutely. But when it comes to family, there are very, very few things he cares about in this town enough to make that kind of sacrifice for.

And the main one is right in front of him.

But he'll just avoid that issue for now in favor of Dean's other question. ]

The antler tattoo. [ He reaches up to tap his right shoulder, his own is a few inches down from there, usually completely hidden. Dean's is a lot more obvious. ] Yeah, everyone's got one of those. I don't know why except for the deer thing going on around here. As far as I know they don't actually do anything.