What is slipstream in real life?

I'm curious to understand, what exactly is slipstream in real life? Is it a tangible concept, or is it more of a metaphorical term? How does it apply to various aspects of our daily lives, if at all? And is there any connection between the idea of slipstream and the world of cryptocurrency and finance? Can you provide some real-world examples or analogies to help me grasp the essence of slipstream?