Arnie is the familiar nickname for Arnold Schwarzenegger, whose exaggerated action hero delivery has been imitated in memes for years. The phrase burn baby echoes the classic burn baby burn chant long used to celebrate a sharp insult or a dramatic defeat. This short version spread through soundboards and short form video edits, where creators reuse familiar impression style clips as instant reaction cues. It remains popular because the meaning is clear in under two seconds, even for viewers who have never seen the original context.