High level or large quantity. Often used in place of entire sentences to describe particularly bright, good or surprisingly off the scale phenomena or occurance.
Derived from generic pop culture noises; such as the high pitched sound of blaster guns from Star Wars films. Interestingly, users will often accentuate the length and tonal properties of parts of this word to enhance the effect dependant on the level of extremety appropriate to the situation.
a: "You know that guy is worth £30 million"
a: "You know that guy is worth £300 million"