It's not hard to understand why Taika Waititi liked to keep things loose and improvisational on his Thor: Ragnarok set -- in fact, 95% of the film's dialogue is reportedly improv. The upcoming Marvel epic is his first real foray into the world of blockbuster filmmaking, and his previous movies (particularly What We Do in the Shadows and Hunt for the Wilderpeople) similarly relied on heavy improvisation to deliver some of their best and most memorable lines. Beyond that, Taika Waititi's "Team Thor" mockumentaries have also allowed Chris Hemsworth unprecedented freedom to dive into his comedic chops and provide some off-the-cuff jokes. The guy knows offbeat improv, so this particular suggestion probably caught his interest almost immediately.