The unconscious tendency for a guilty or otherwise culpable individual to offer unsolicited excuses, explanations or clarifications out of interrogative context.
If someone explicitly states, "I'm perfectly normal" when there has been no preceding accusation to the contrary--that's an example of Unprovoked Denial...kinda like "No Collusion" or "No Obstruction".
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).