The exact origin of the 'Dekoi wo nagasu' clip is undocumented, which is common for user-uploaded soundboard audio, but its meaning does the heavy lifting: in Japanese gaming slang a 'decoy' is the bait player or tactic that draws enemy attention. The line spread through short-form edits where creators needed a loud, confident callout for trick plays, fake retreats, and sacrificial moves. It belongs to the same family as Leeroy Jenkins, the classic shouted charge that turned one player's reckless rush into a universal meme for doomed bravery.