The exact speaker and original recording source of this short phrase are not confirmed. Online, “hey bestie” became a familiar greeting in meme posts, chat-style sketches, reaction edits, and short-form videos. Creators often use the wording sincerely between friends or ironically before criticism, gossip, and uncomfortable news. The sound remains useful because it is instantly understandable, lasts less than a second, and can establish a friendly or suspiciously cheerful tone before the visual joke develops.