The Sal "Teenage Dream Dance" meme comes from a clip of Sal Vulcano from the comedy show 'Impractical Jokers', where he dances exuberantly to "Teenage Dream" by Katy Perry. This scene is often edited in slow motion with exaggerated lighting or set to romantic music to emphasize Sal's unrestrained joy. His expression and body language convey pure, childlike excitement that is both infectious and slightly ridiculous. This meme captures the essence of experiencing overwhelming happiness over something trivial, making it a perfect fit for meme culture's love of irony and hyperbole.