Supernatural February 18 2011 "Mannequin 3: The Reckoning"

Remind me. What prompted this exchange?

Dean was asking Sam how long it seemed like he was passed out (and in hell? I’m not sure about that part) - it was only minutes for Dean watching him, but a week for Sam.

Was that supposed to be funny then? I don’t get it.

I didn’t think it was funny, but I guess Cat Whisperer is amused because it was a week - for the viewers.