Did you know…?
…that ‘touch and go’ came from 1800s. Ships would come close to touching the bottom of the sea while in shallow water. These dangerous situations sometimes ended with narrow escapes. If the ships touched the bottom but managed to go on, it had survived a ‘touch-and-go’ situation. This also applied to horse carriages when there was a narrow escape after the wheels of two carriages touched.
Today it means any uncertain risky situation.