The conversation between human and AI assistant.
[|Human|] Suggest a new metaphor to describe someone being very fast.
[|AI|] One creative metaphor to describe someone being very fast could be: "He moves like a bolt of lightning, electrifying the air around him with his speed and energy." This metaphor invokes the image of a bright and powerful flash of light speeding across the sky, leaving everything in its wake.
[|Human|] 
Suggest a new metaphor to describe someone being very fast.