The waterphone is a real experimental acoustic instrument invented by Richard Waters in the late 1960s. Its eerie, detuned resonance became a familiar sound in horror and thriller sound design, especially in film and television. Online, short waterphone clips spread because they create instant suspense with almost no setup. Creators still use them in memes, haunted house edits and fake scare videos because the sound is recognizable, dramatic and effective even when the joke is obvious.