The definition to call your mother to get her angry and stare at you confusedly. It is also a great alternative to 'bro' or 'dude'. Incredibly versatile.
Ignacio: I always feel so guilty after I momturbate on Friday nights.
Jose: You should, bro. That's nasty!
Ignacio: I know man, but she has such firm, voluptuous, mouth-watering knockers!
Jose: O_o
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).