This sound is credited in its file metadata to Kimani H. Albright and described as one of the creator's voice samples made with Audacity. Rather than coming from a film or TV quote, it appears to be an original recorded laugh designed for dramatic and comedic use online. Long evil laugh clips stay popular because they instantly signal a cartoon villain mood, and creators can use either the full take or a trimmed section depending on how exaggerated they want the joke to feel.