Bang-bang moment

A moment that causes you to react instinctively. It's not about guns or shooting, it's about reacting to a situation with a quick response. A term often used to describe quick movements in sports. fight or flight, instinct, react, reaction time, quick response

When my neighbor across the street yelled watchout, I immediately fell to the ground and covered my head. A tree limb had fallen in his yard, but I thought it was a drive-by. It was a bang-bang moment for me, I'm paranoid as heck.