Bottles Bullshit Trend Line, (BBLT) - Used by the not-so-famous Bottle Rocket of Greatland fame who once laid a trend line on a chart with zero experience, and rode the sucker for well over a year.
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.