Huffing - Slightly-Mad Social ScienceThis is a "Special Message" From Slightly-Mad Science regarding "huffing."
From Medicinenet.com:
Inhalant abuse (commonly called "huffing") is the intentional inhalation of chemical vapors to attain a mental “high” or euphoric effect. A wide variety of substances, including many common household products, are abused by inhalers."
(Seriously though, huffing is very dangerous and can kill you on the first try. Find safer hobbies...like full-contact kickboxing.)