Someone recently made a gif from a video where John hollers a question off-screen to Sarah about her dating preferences or some such thing and Sarah hollers back "obviously not" and John puts his head down and laughs. Anyone, anyone?
http://www.youtube.com/watch?v=PkoBoF9FDXg 1:37, I think this is the video you're talking about.
Darn, I was really chuffed I knew this. Beat me to the punch =P
You got a link to the GIF? I always thought that would make an awesome one!
That's the right video - thanks guys!! I've searched for the gif again as well and haven't found it - it was a good one.