Slang term for serious users of DXM, or Dextromethorphan - a dissociative drug. Dextronauts are those who go above and beyond trip dosages or prolong them for periods of time in order to have intrinsic, ethereal experiences. They are well versed in the toxicology of the substances ingested and also clearly understand any possible side effects and outcomes.
David soon begin experimenting with higher doses, discovering ego death and adopting shamanistic beliefs to further his purpose. He had become a dextronaut.
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).