The laugh comes from SpongeBob Plug 'n' Plays (With Shrek) by AquaticNeptune, a fan video built around the odd humour of licensed plug and play games. Clipped as Creepy Laugh.exe, the sound circulated on soundboards as a quick horror-meme reaction. Unlike a baby laughing meme, it is chosen when the joke needs menace rather than cuteness, and editors often pair its mood with a scream meme moment. Its file-style name adds to the cursed, corrupted feeling that keeps it useful for spooky edits.