An alternative form of "foreigner", usually said with some form of negative connotation. It can refer to anyone outside of your country, but is most commonly accepted as applying to anyone from a non-English speaking country.
1: Lmao look at xox h0z, what a fucking 4ner.
2: I can't understand a word my math teacher says, he's a damn 4ner.
3: I tried calling customer service to get my internet fixed, but everyone there were all 4ners
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).