Video: Unless you've been on a movie set before, it's hard to describe just how tedious and monotonous making one can be. So it's no surprise when you see something like this Captain America: Civil War gag reel, which features most of the cast cursing, laughing and generally just screwing everything up. It's the only human reaction to such a crazy process. The video is a clip from the upcoming Blu-ray of the film, which is out on August 31. Here's the clip.