Also abbreviated as "GonG", this term refers to when the downstem, boro joint, and bowl of the water pipe are all made of glass. Because of this 'all glass' path, it provides the user with better flavor and cleaner vapors to inhale. All in all, creating a more pleasant smoking experience.

"Benjamin just got a new water pipe that is glass on glass. It hits so smooth that you don't even realize how big of a hit you took!"