User blog comment:The Boomerang/Angry Bird Toon Responses/@comment-109.78.67.16-20130401184736/@comment-5169574-20130401215712

Well, he didn't necessarily slow down time, time was slown down in the viewers' point of view because since Chuck is so fast, if the episode was shown in regular time, Chuck would be too fast to see. It seems confusing, but I believe that's what Rovio was going with.