The phrase 'New Phone, Who Dis?' originated in the early 2010s as a genuine response to losing one's contacts after switching devices, but it quickly evolved into a powerful social weapon used to intentionally snub or dismiss someone. It implies that the sender's number was never saved or was deliberately deleted, making it a staple of internet sass and 'petty' culture. Typically used when an ex-partner, an annoying acquaintance, or a bill collector reaches out, the meme mocks the sender by pretending they are a total stranger, turning a common technological inconvenience into a legendary comedic burn.