The line comes from Sharpe, the British television adaptation of Bernard Cornwell's novels about Richard Sharpe, a rough-edged soldier rising through the ranks during the Napoleonic Wars. Played by Sean Bean, Sharpe is famous for his blunt, no-nonsense manner, and this short insult captures that attitude perfectly. Shared on soundboards and in meme edits, it has survived because it is short, instantly recognisable as a put-down, and easy to drop into roast videos, gaming clips and friendly banter between mates.