The phrase is Portuguese for 'who will be the next ex?' and circulates mainly as a Brazilian internet joke about serial dating and short-lived relationships. Rather than belonging to one famous scene, it works because the wording is instantly reusable: any new couple, rumoured romance or public split can be framed as the latest entry in a longer story. That flexibility has kept it useful for reaction videos, gossip edits and short-form posts, where a familiar question can set up a joke without needing extra explanation.