A very annoying and irritating koon, which is the persian word for butt. (however, it holds a different connotation in farsi) Used to express discontentment towards the receiver of the word, can be used as an expletive.
To put your hands together in the form of a gun, then you sneek up behind some victim and ram your fingers up their butt.
(Do not do this if the person isn't wearing pants)