The final warning to get out of a situation, ie. Your anus is the one to tell you to get out of there!!!
I was at the bar drinking when someone pulled a gun and I justsat there until I experienced Anal Ventriloquism and knew it was time to get out of there!
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.