Air horns are signaling devices that produce a powerful tone by forcing compressed air through a horn. Their penetrating sound is widely associated with boats, trucks, sporting events, celebrations, and DJ performances. Short recordings of the blast later became common in online videos, where creators use them as abrupt punctuation for jokes, wins, reveals, and intentionally obnoxious interruptions. The effect remains recognizable because it is immediate, extremely loud in character, and easy to synchronize with a visual impact or sudden change of mood.