The word in Aboriginal English in south-east Australia for a white person. Dates back to colonial Sydney and Cockney convicts calling each other and soldiers "guv'ner". This became "gubba" because the "vna" sound did not occur in the localSydney Aboriginal language. Gubba or "Gub" is gender neutral and by itself is not an offensive term. It may also be related to the wider Australian words "cobber" and "cob" meaning friend.
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).