One of the mysteries of the English language finally explained.
Fuel for cars, aeroplanes, etc.; (also) electrical energy. In extended use: something that provides energy or acts as a stimulant, especially coffee.
1920s; earliest use found in The Indianapolis Star. From either go or go + juice. In some forms with reduplication of the first element, perhaps influenced by go-go.
In this article we explore how to impress employers with a spot-on CV.