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1.
To breath in. Also, an incorrect spelling of annihilation, coined by Kyle Wright. Especially useful when combined with the word funtional, to produce the band name Functional Inhalation, which is the only band (other than perhaps an orchestra) to contain more members than Slipknot.
"I am going to launch the nukes in my backyard silos, thus causing the inhalation of the entire world!!"
by Anaksunaman June 19, 2004