Used to describe when someone says something that is no good or to describe something that is no good, or wack.
Dan: Yo son idk if I'm going to practice tomorrow night, I'm kinda sore from the weekend.
Mike: Man that's some previous level shit, you haven't been to practice in a month.
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).