The line comes from the SpongeBob SquarePants opening sequence, where the pirate-style narrator hypes up the audience before the theme starts. The series began in 1999, and the intro became one of the most recognizable TV openings online. This quote spread widely in meme edits, remixes, and reaction videos because it is short, instantly recognizable, and easy to place before a louder payoff. It often appears alongside other SpongeBob reaction sounds such as SpongeBob boowomp.