The line is the famous 'kick ass and chew bubblegum' one-liner from the 1988 film They Live, delivered by wrestler Roddy Piper, and it became a signature catchphrase of the Duke Nukem video games in the 1990s. Gamers and streamers have repeated it for decades as shorthand for going into battle, and it now circulates online as a reaction sound and hype meme. Its mix of swagger and self-aware cheesiness keeps it funny even when used completely seriously.