The crudest name for nitrous oxide used as a recreational drug. such a harsh name for such a sweet + beautiful drug. Nos, bulbies, whippets, nitrous, or just straight "gas" are much more appropriate, not to mention relative.
a 'nang' is a little metal bomb shaped like thing that holds nitrous oxide. this is inhaled with the aid of an old soda stream device, the gas is then released into a baloon then inhaled through the mouth. nangs are particually good when taken coming down on exstacy.
eg. big night out, head mangled, go back to a party get some nangs. cause it strangely sorts your head out when you come back down to earth from the nang hit.