"Because he's a dick."
"Everybody thinks we're a couple. Unless they already know we're brothers, or FBI or CDC or whatever we are this week. It stopped bothering us years ago."
"Oh."
"So. Um. We have some pictures of Dad, if you want to see. And Dean can tell you about the time Dad got cornered by a ghost who thought he was this kid the dead guy bullied in junior high."
"Hey how come I have to tell that story? You were there too."
"Yeah, throwing salt around like a sensible person. Not laughing my ass off and hoping it didn't come after me next."
"...If I say I'm really glad I didn't grow up with you, will I get shot?"
"Nah. We're Winchesters. Can't live with 'em, can't kill 'em, and if we don't shoot to kill we'll just end up stitching you up after."