A video of a man in a teal shirt exhaling a huge white vapor cloud circulated on X. One poster asked if it was AI. Replies noted the footage predates ChatGPT and recalled seeing it in high school. A user turning 29 soon said they remembered the clip from years earlier. Others reacted with surprise at the cloud size or called the video the coolest thing seen that day. The posts frame the clip as an existing recording rather than new content.