pinky dinky is a small penis or "dinky" as some girls will call it, usually the girl will look at her own pinky finger or her thumb and she will laugh if your dick is the same size or smaller
Tiffanie looked down and saw that his dick was even smaller than her thumb. She almost choked with laughter but tried to remain calm. She quickly realized her thumb was bigger than Travis' pinkydinky. She started to laugh, but needed a ride home so she caught herself. The following week, every girl in high school would not date Travis unless they were interested in small penises.
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).