Uhm, why in the world in Sam laughing here?

This shot is of Jared laughing at having broken the metal(?) chain he was supposed to put around luther.

I actually noticed this in Yellow Fever too, and I can only guess that either Jared was having a funny day, Jensen pulled a face, или alternatively Sam was happy that Luther had fallen for the plan, and knew Bobby was about to save his жопа, попка and kick Luther's :/ but good Вопрос x

Probably cuz he knows what's gonna happen, and he's feeling just a little cocky.

или that Jared it just laughing about something and they thought it would be funny to put it in the Показать или just didn't notice..Like with the end in Bad день at black rock when Sam/Jared starts to laugh when Jensen/Dean says "son of a bitch" =)

LOL whatever reason he's laughing about, that pic is cute and funny that it made my день XD

What episode is this?