Most of “The Weird Stuff” is underground, but every now and then something VERY strange comes along with enough charm and smarts to push through into the mainstream. That’s what we have in Swiss Army Man, just released to theaters this past weekend. It’s a story that seemingly shouldn’t exist, or at least should only exist on the periphery, but thanks to sheer talent and audacity it has become one of this year’s most popular films. It’s basically Cast Away with a rotting corpse instead of a volleyball, and the corpse helps the lonely protagonist with the power of gaseous decomposition. Love through farts.