Skype launched in 2003 and became the default voice and video calling app for many Linux, Windows and Mac users through the 2000s and 2010s. Its incoming call warble was heard in homes, offices and internet cafes worldwide, long before apps like the Discord call sound took over gaming chats. Clips of the ringtone survived on soundboards and in meme edits after Skype usage declined, preserved because the sound alone explains the joke: an old-school call is coming in, and someone from the internet era past is trying to get through.