Doink is an onomatopoeia that comics and manga have printed in speech bubbles for decades, a rubbery knock for a soft object hitting a hard surface. The recording behind this 104-millisecond clip is unknown; listeners often ask whether it was lifted from a manga adaptation, since the same elastic twang turns up in anime and cartoon soundtracks. It sits on meme soundboards beside heavier hits like the punch sound and the overblown vine boom, marking small impacts where a full crash would be too much. Its popularity comes from restraint: the doink makes a moment funny without stealing the scene.