Little is documented about where pandaaa was first recorded, so its history is mostly the history of how soundboard users share it. The elongated spelling mirrors how the word is stretched in the audio, which makes it easy to search, save and drop into edits without context. It circulates among animal meme clips and cute reaction sounds, where a long, obvious build matters more than realism. Because the joke is in the delivery alone, it keeps being reused for pandas, pets and any reveal that benefits from an over-the-top announcement.