The 'Metal Pipe Falling Sound Effect' refers to a specific, high-pitched, and echoey sound of a metal pipe hitting the ground. It gained massive popularity as a shitposting staple in 2022 and 2023, particularly within TikTok and YouTube '21st Century Humor' edits. The sound is often used as a subversion of expectations, replacing more traditional sound effects or serving as a sudden, loud punchline. Its humor stems from its extreme volume and the absurdity of using a mundane sound effect to evoke such a chaotic reaction. Whether it's paired with an image of an actual pipe or used in a surreal video edit, it has become one of the most recognizable auditory memes in internet culture.