A squealing genre of flatulence commonly heard from one sitting down at an uncomfortable middle school desk, distinct in both sound and smell. A schoolhouse fart turns heads, not necessarily due to smell, but because of the scenario in which the toot was performed. Heads turn in disgusted disbelief. The best schoolhouse farts are undoubtedly expelled in a classroom setting - full of students, teachers, faculty, staff, and assignments.
"Ugh, did you hear Johnny rip ass during the middle of our Geometry lecture? Oh my, it was not just a toot, 'twas a schoolhouse fart!"
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).