Stretching the metal umlaut to new heights is the least ridiculous thing that comedy band Green Jellÿ — pronounced “green jello” (wink) — does. With songs like “Misadventures of Shitman” and “I’ve Got Poo Poo on My Shoe,” they’ve made an entire career of keeping it indulgently dumb despite having past members like Tool’s Maynard James Keenan and Danny Carey. On top of that, there are the crazy props and costumes that elevate their shows to all-out stage spectacles à la GWAR and Mac Sabbath.