So I took this screen shot from the season ten gag reel
I won't explain the situation in the actual show cos of spoilers
But any way
So jared is like
'Welcome back Dean, and why did you come after me with a hammer' jared asks as if it's the most casual thing in the world
And Jensen replies
'Cos I was gonna nail you' and then he winked which is where I took the screen shot
I couldn't stop laughing
Anyway yeah watch the gag reels there AWSOME !!