Mexican expression used to humorously address an anglo person. Roughly translated, it means "sillyred-faced gringo". Its not really rude, but kind of playful and endearing, so you can use it freely in polite company, like for example when you´re playing golf with your American business partners.
Pinche gringo cara de mierda, tu paga la cuenta cabron! (You silly red faced gringo, id be delighted if you picked up the tab!)
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).