The "Here's Johnny" meme originates from Stanley Kubrick's iconic 1980 horror film, *The Shining*. It features actor Jack Nicholson, in his role as Jack Torrance, maniacally peering through a hole he's chopped in a bathroom door with an axe. The memorable line "Here's Johnny!" was an ad-lib by Nicholson, referencing Ed McMahon's introduction of Johnny Carson on *The Tonight Show*. This meme is widely used to depict a dramatic, sudden, or unsettling entrance. It conveys a sense of breaking through, appearing unexpectedly, or expressing intense, often manic, energy or frustration in various situations.