a deity worshipped by many moogists - he is known to represent virtue and peace, but also sloth and laziness. he is considered by moogists to be a "complete deity," one who in his all-representing nature is also omnipresent and thus omnipotent.
Expression of surprise or exasperation. Similar to "Goodness gracious." Never a popular saying, but was used sparsely in the 1950's and 1960's. Probably a forerunner of great googly moogly.
"Great Googa Mooga, can'tyou hear me talkin' to ya?"
The Temptations - 'Ball of Confusion'