Reggie Kray was a real London gangster who, with his twin brother Ronnie, ran organised crime in the East End during the 1950s and 1960s. Tom Hardy played both twins in the 2015 film Legend, which renewed interest in their story and produced many short clips shared online. This line circulates as a standalone reaction sound, separated from the film scene, because its understatement works for many situations. It remains used in edits and replies where a calm, cutting remark is more effective than a loud reaction.