By the seat of your pants

"By the seat of your pants" is an idiomatic expression that means to do something based on intuition, instinct, or improvisation rather than careful planning or preparation. It implies a situation where someone is acting or making decisions without prior knowledge or experience, relying solely on their instincts or making it up as they go along. It often suggests a sense of unpredictability or going with the flow, often in challenging or uncertain circumstances.