The fairy tales that kids grow up with are bloody and brutish — frightening allegories meant to teach them about danger. Jim Knipfel has crafted this collection of fairy tales for adults, and while the morality might be a bit grayer and the beasties a little less bucolic, he taps directly into the twisted vein of creepiness that made Grimm so grim. Only Knipfel’s funny. Really funny. In These Children Who Come at You With Knives urban pests (swarms of roaches, elves that place dog turds on the sidewalk) replace big bad wolves to gut-busting effect. And nothing’s as hilarious in Knipfel’s sarcasm-soaked mind as that three-word lie ”happily ever after.” A?