Skype became one of the most widely used internet calling services in the 2000s, and its desktop version for Windows gave users familiar call tones for ringing, connecting and hanging up. The decline tone was heard whenever a call was rejected or ended, making it instantly recognisable to anyone who used the app for work, study or keeping in touch. As Skype use declined, the sound lived on in edits and memes, where its short, final quality makes it a convenient shorthand for rejection, ghosting or walking away from a conversation.