I can't say I want to try to recreate this version myself (no thanks!) but it's a pretty cool rendition. Rather than simply using cups and a voice like Anna Kendrick in Pitch Perfect, this edition ups The Cup Song a level to include guns. Yes, guns. With bullets. That fire. I wonder how they figured out which sounds would fit, and how long it took to practice all that loading and unloading!!
I shouldn't have to say this, but don't try it at home!!!!