The glag is an invisible substance created by many beings of great stupidity in the universe. There is a balance of glag, which when disturbed may lead to the heat-death of the universe.
Glagos means water. For instance someone could ask “can I have the Glagos” and that would mean can I have some nice fresh water please! Also in the sense of “can I have the Glagos dispenser please”, meaning either a water bottle, a water jug or another water carrying device.