Faking flatulence is an art. A real-life stinker toots out of the human bottom with a pitch, a dimension, a viscosity, and a soul. If you want a breakage of wind to ring true, like they do in Swiss Army Man (now available to stream on Amazon Prime), then you hire ears tuned to the finer frequencies of farting. Steve Nelson, Swiss Army Man's on-set sound mixer, and Brent Kiser, the supervising sound editor on the movie, have those ears.
Swiss Army Man stars Paul Dano as Hank, an emotionally shattered man preparing to off himself on a deserted island. But before he can jump, Hank discovers the dead body of Manny (Daniel Radcliffe), whose active anus provides the island-dweller with a jet-powered escape. The mainland is where the pair's real adventure begins. Manny's spring-loaded body becomes Hank's survival tool. His naïveté, courtesy of a reanimated consciousness, guides Hank's spirits. Awakening, and more farts, follow.