Someone who takes credit for something artistic or creative that they didn't do because they are a sad and hopeless person in school *cough cough* LIFE *cough cough*
Person 1: Look at that asshole, he's such an art kapotnik.
Person 2: My sister?
Kaputnik is a conjunction of the word "kaput" (meaning "broken, damaged, destroyed") and "Sputnik" (Russian robotic spacecraft). Meaning is obvious: something which hasn't come up to expectations.
"Kaputnik!" exclaimed John watching his RC helicopter explode in the air.
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).