The Campaign (formerly known as Dog Fight and Rivals) is a 2012 American political comedy film starring Will Ferrell and Zach Galifianakis as two North Carolinians vying for a seat in Congress. The screenplay was written by Shawn Harwell and Chris Henchy, and directed by Jay Roach. Wikipedia
Dylan Huggins: I put a firefly in my butthole.
Marty Huggins: Why?
Dylan Huggins: So I could see my farts glow.