A quick and audible nasal inhalation made after making a declarative statement about a topic that one's audience supposedly knows little and/or the sniffer considers himself/herself somewhat of an expert. The self-important sniff serves as punctuation to a statement that is typically unquestionable as the sniffer may attempt to pass opinion off as fact. It is typically used by hipsters, although it is also used mockingly, and to some comedic effect, on the Adam Carolla Podcast, as well as The Film Vault (podcast) by hosts Bald Bryan and Dick Anderson.
Bald Bryan: "Micheal Parks...is the defacto star (Self-important Sniff)"
by Mjim#9 November 07, 2011