The Angry Beavers was a Nickelodeon animated comedy that ran from 1997 to 2001, following Norbert and Daggett, two beaver brothers living on their own after leaving their parents' dam. Like many cartoon sound effects from the era, its bright doorbell became easy to reuse once short clips began circulating on soundboards and meme pages. Fans recognise the tone instantly, even without seeing the characters, and creators keep using it because a doorbell is a universal signal for an arrival, a visitor or an interruption.