The story of a bored individual...

For those of you who watch, I saw this episode and noticed a little thing yesterday that I've never really registrered before.

When Sam says somethink like; 'Look, you're my brother, and I'd die for you'.
The look on Dean's face afterwards... it's for a split second, but he looks so pained by that statement.

I dunno, was just a little thing. 

Yesterday was the third... or fourth time I've seen the episode, it's never been one of my faves, but yesterday it really grew on me. Can't put my finger on why though.