@spongeyarchive: In "Once Bitten," Gary becomes extraordinarily grouchy after stepping on a wood splinter from Squidward's new fence, causing him to go on a rampant biting spree. After Patrick fabricates a terrifying theory about "Mad Snail Disease," he convinces Squidward and the rest of Bikini Bottom that Gary's bite will turn them all into brain-eating zombies. As mass hysteria spreads, the entire town succumbs to placebo symptoms and forms a pitchfork-wielding mob to quarantine Gary at the Krusty Krab. Right as the situation turns violent, a actual snail expert steps in to reveal that Mad Snail Disease is a complete myth. The doctor simply removes the painful splinter from Gary's foot, immediately restoring the peaceful snail—and instantly curing the town's paranoia.