Discord built its voice chat around separate mute and deafen controls, with deafen silencing both the user and everyone else in the channel. As Discord calls became a staple of gaming videos and streams, its interface sounds were lifted into edits as standalone jokes. The deafen sound in particular spread because viewers who use the app recognise it instantly, while others still understand its muffled, shutting-down tone. Searches pairing it with the deafen icon and deafen button show how closely the sound is tied to that single action in the interface.