[Man, he hasn't even told him about that other sibling that got killed in the line of duty when they were all teenagers, or about how that same sibling is now his ghostly conscience -- but that's not the sort of thing you share with someone you just met, not really.

He just shrugs.]

Kids aren't known for their impulse control -- or their ability to listen when their crotchety asshole father is the one telling them that playing with space-time is a bad idea.

And -- yeah, he came back. Recently.