Hadoolin is a very versatile word it can be used for anything you wna tit can be pretty much any part of speach it derives form old 2d fighter games where players often yell hadookin when they are shooting balls of kinetic energy. it has most recently come into use by the juneau horseteam members. but you can sue it as an exclamtion which is the most common form or can be used as a suffix prefix or any type of ix. often times only part of the word is used (i.e. dookin).
A real-life special attack achieved by reaching down the back of your pants as you fart to catch the gas in your hands, and then thrusting your palms forward, sending a surge of invisible destructive spirit energy flying towards your opponent.
I knocked my roommate unconscious by focusing my chi through my colon and into my cupped hands, and then into his face accompanied by a cry of "Hadookie!"
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.