Thank you backwards_d for making this gif.
Stashed in: Silence, Dafuq?, SNL, Reaction GIFs!, @stevecarell, High Quality gifs, Really?, DrRhymes, Stop Girl, backwards_d
Here is the SNL joke Justin Timberlake is reacting to:
DrRhymes made a few versions of this gif, too.
Thank you DrRhymes for making these gifs: http://imgur.com/a/5xuVI