The Inception horn became widely recognized after Inception and its marketing campaign in 2010, where the film's trailer sound helped define a new era of blockbuster suspense. That deep trailer horn style was quickly copied across movie promos, parody edits and meme videos online. Over time, people stopped using it only for real tension and started using it ironically, dropping the sound on minor events to make them feel absurdly important. It remains popular because the effect is immediate and instantly readable.