With the oldest train network in the world in Britain, our language is littered with railway references on a daily basis… Hit the buffers Suddenly reach an unsuccessful end. Go off the rails Start behaving badly with a lack of control. The gravy train An easy way to a lucrative living. Let off steam Release energy or emotion. On the right track On course to yield good results. Full steam ahead A wholehearted approach. Stop someone in their tracks Halt progress immediately.