"Googar Juice" is uncommon slang for pomegranate juice - usually in a tetra pack container - that is used the East-Midlands of England.
The phrase originated when popular rapper stormzy visted a Tescos supermarket in the Leicestershire area and couldn't rhyme a word with booger so settled on "googar". He later explained he was referring to pomegranate juice.
Boy 1: Did you see Stormzy at Tescos?
Boy 2: Yeh dude, I need me some of dat googar juice right now!
Boy 1: Shut up you don't even know what a googar is
A Googan is a term used by local fishermen to describe idiots on the water. They are dangerous, oblivious and lack talent when operating boats, tying knots, choosing the correct fishing gear and the like. A Googan might look capable and confident but be careful around them. Their lack of knowledge, skills and abilities around the water can disturb your day in any number of ways. Usually, their confidence far outweighs their competence, and their ineptitude shows itself rather quickly through either words, appearance, or actions.
Def. 1: Widely known for being the King if the Demon Realm. The all-powerful manbeast whom members of the Gogarian faith view as their deity and supreme ruler.
Def. 2: Also an interjection used to describe any feeling or thought. It is appropriate to use this at anytime, no matter the situation.