Seth Meyers joined a MacGruber panel at SXSW to describe a prank that Will Forte had played on him during the movie shoot, and while pranks are the worst, always, this one is pretty great. Also pretty great: Seth Meyers's Will Forte impersonation. [videoembed size="full_width" alignment="center"][/videoembed] Honestly, when someone tells you that making movies is a lot of hard work, ...