Gan ma is a common everyday Mandarin phrase rather than a line tied to one identifiable show, character or viral video, so this clip has no single confirmed origin. Its popularity comes from how widely the phrase is understood in Mandarin-speaking online communities, where a short questioning voice works as a quick reaction to interruptions, surprises and odd behaviour. Shared through soundboards and short-video edits, it survives because the question is instantly recognisable even without subtitles, making it easy to reuse across jokes, chats and reaction clips.