The Dexter reference comes from the television drama Dexter, which followed forensic analyst and vigilante killer Dexter Morgan and ran from 2006 to 2013. Short clips and reaction edits from the show became a reusable meme format on TikTok, where users isolate a serious or suspicious beat and recontextualise it over everyday footage. The exaggerated title reflects how soundboard and repost culture stretches a clip through repeated sharing. It remains popular because the character's intense, secretive persona is instantly recognisable and easy to apply to almost any awkward reveal.