The phrase how convenient is that has long been used in everyday speech as a sarcastic response, and the short clip version turned it into a reusable reaction sound online. Spread through soundboards, short videos and group chats, it works because the meaning is clear even without context or a visual. Creators keep returning to it for moments of improbable luck, neat coincidences and outcomes that benefit one person a little too cleanly, where a longer explanation would kill the timing of the joke.