Pocket Sand comes from Dale Gribble, the paranoid conspiracy theorist in the animated sitcom King of the Hill. Dale uses the trick when he feels cornered, shouting the warning as he hurls sand to blind his opponent and make a getaway. Clips of the moment spread through YouTube edits, reaction videos and soundboards, where the phrase became shorthand for a cowardly but funny escape. It endures because the delivery is instantly recognisable and the tactic is absurdly simple, making it easy to drop into almost any losing confrontation.